As Apple still sells older iPhone models in other countries they need to continue supporting them therefore the iOS new releases are continually supporting older devices, even not all features are supported due to hardware limitation or marketing reasons they work well after a few updates.
About iOS getting slow, there will be instances when the App you are using hasn't be updated to the latest version of iOS that you are running and it may have some sluggish behavior, but this is not so frequent. And some of these apps you can run on the web or from your Mac so no biggy.
Another times is when your iPhone is running out of space. I take a lot of pictures and record plenty of HD videos and when there is not enough space left it becomes slow until I delete some.
Why I prefer iOS to Android. I never saw a need to get into Android. Since the first iPhone came out I have been using an iPhone and it has been getting better and better.
I used Palm OS devices in the 90s. And what Apple created with the App store is way better than anything done before for finding mobile software free and paid.
Customization is always available if you want to jailbreak. iOS 8 brings some widgets and customization not previously available (kind of catching up with Android here).
There are plenty of tools and kits for developers to create apps and more things to work in the software side as well as with other hardware devices.
HomeKit, HealthKit, the
Watch and many other devices will spur into many other uses for iOS devices.
Now fast forward a couple of years in the future, and let's say that home automation is at it's prime time for a lot of devices and competitors thriving to provide secure solutions for Home Automation. I will not buy stuff that can be easily hacked, nor give away my home personal daily life to google, or Facebook, or whomever is out there then for free.
Apple may/will also get intrusive but still I have less concern with them than with Google. Google and Facebook are making huge profits by selling what we as users provide to them for free.
With Apple I still have the customer edge as I am paying for certain services, e.g. iTunes Match service. Even the tiny letters, etc. I know (will like to believe) that Apple uses the data to produce better products and services not to sell them to others.
Security and privacy are the main concern.
Android is free. These carriers and device manufacturers are always trying to catch up with Apple and own the user experience bloating with layers of unique crapware that I don't like and will never trust.
I have been using Apple products since the 80s and never had such a concern that Apple will jeopardize my personal data. Apple is not infalible but my experience so far has been very good.
Due to its nature and how it is widely distributed, Android is a very open wild-west for hackers and malware.
Maybe you can do your own setup in Android and spend a good enjoyable time tinkering and tweaking, but I prefer as others had mentioned, to spend my time using the iPhone/Mac/
TV to create things, work, play media, games, communicating with my people, enjoy them while using them, instead of configuring, etc...
Do you used any anti-malware in Android? Where did you typically get your Andoid Apps? Any external sources?
About iOS getting slow, there will be instances when the App you are using hasn't be updated to the latest version of iOS that you are running and it may have some sluggish behavior, but this is not so frequent. And some of these apps you can run on the web or from your Mac so no biggy.
Another times is when your iPhone is running out of space. I take a lot of pictures and record plenty of HD videos and when there is not enough space left it becomes slow until I delete some.
Why I prefer iOS to Android. I never saw a need to get into Android. Since the first iPhone came out I have been using an iPhone and it has been getting better and better.
I used Palm OS devices in the 90s. And what Apple created with the App store is way better than anything done before for finding mobile software free and paid.
Customization is always available if you want to jailbreak. iOS 8 brings some widgets and customization not previously available (kind of catching up with Android here).
There are plenty of tools and kits for developers to create apps and more things to work in the software side as well as with other hardware devices.
HomeKit, HealthKit, the

Now fast forward a couple of years in the future, and let's say that home automation is at it's prime time for a lot of devices and competitors thriving to provide secure solutions for Home Automation. I will not buy stuff that can be easily hacked, nor give away my home personal daily life to google, or Facebook, or whomever is out there then for free.
Apple may/will also get intrusive but still I have less concern with them than with Google. Google and Facebook are making huge profits by selling what we as users provide to them for free.
With Apple I still have the customer edge as I am paying for certain services, e.g. iTunes Match service. Even the tiny letters, etc. I know (will like to believe) that Apple uses the data to produce better products and services not to sell them to others.
Security and privacy are the main concern.
Android is free. These carriers and device manufacturers are always trying to catch up with Apple and own the user experience bloating with layers of unique crapware that I don't like and will never trust.
I have been using Apple products since the 80s and never had such a concern that Apple will jeopardize my personal data. Apple is not infalible but my experience so far has been very good.
Due to its nature and how it is widely distributed, Android is a very open wild-west for hackers and malware.
Maybe you can do your own setup in Android and spend a good enjoyable time tinkering and tweaking, but I prefer as others had mentioned, to spend my time using the iPhone/Mac/

Do you used any anti-malware in Android? Where did you typically get your Andoid Apps? Any external sources?