On my iPhone, I have nothing major. Lots of apps I don't really use that much and perhaps it's the apps themselves causing the crashes but that never happened in earlier version. The original iPhone, the 2, 3, 4 were all really great for me. The 5s as well was pretty solid but even with the 5s, some of the software was getting squirrely and things weren't as smooth anymore like scrolling and all the little things that used to be smooth and just right.
I have a 15" macbook pro and though I like Yosemite, it's always crashing it seems. Not always, but for a mac, always. Could be software that needs to be upgraded as well, but I just don't understand why it wasn't happening like 7 years ago. For a while in the 90's, man, some of the mac stuff crashed a lot and Jobs promised all sorts of stuff they could barely deliver. Then he got his system going and every single Apple thing I got was just about 100% rock solid, physically and software-wise. Now, I upgrade (or more often wait to upgrade to see if it bricks anyone's iPhone or erases anyone's iWork docs) before I upgrade things. I use my mac for music production, Finale, Logic Pro, Pro Tools and some minor video editing but sometimes it's even just in safari where it craps out.
I've had macs since 1992 and they are the only computer I have ever bought and used full-time. In the late 90's through around 2010 maybe, they were great for me. Now, these last 2 years maybe, they have just been a mess. Logic pro is dumbed down a little and while there are very cool features I appreciate, they try to make it too user friendly. Same with Final Cut. I'm going back to Pro Tools soon and will probably use some other video editing software. While I like Apple, I don't think their head is in the game anymore, they just want to make money. They are lowballing EVERYONE, their manufacturers, the music labels, the movie industry, yet APPLE charges premium for their stuff. Irony, hypocrisy. They use their power to get it now too. Sad. If the trend doesn't change, I can see myself not using hardly any Apple stuff in 5 years...
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Forgot to answer this. I currently have an iPhone 6+, apple TV, Macbook pro 15", time capsule 2tb, airport expresses and base stations nd that's just me personally, not to mention my wife and daughter have lots of apple stuff. I used to have an iPad mini and their update was really pathetic. I didn't update mine and went ahead and stopped using it. Macbook pro I haven't upgraded in almost 2 years now and I used to upgrade every year or even around every 8 months when the newest one would come out. I won't be upgrading my apple tv, nor my time capsule and probably not my expresses. I'll use them till they no longer work and probably go elsewhere. Never thought I would but for using them for over 20 years, there's definitely been lack of quality control on the software side this last year or two. Also, not a fan of the watch, seems like a money grab to me. The only thing it can seemingly do on it's own is keep the time. Everything else, like even GPS has to be piggy backed (over bluetooth I think) on the iPhone. I think it's an interesting device but seems like something windows would do. I would bet Jobs would be like, "what is this? I can't do anything with it without my phone, why would I want one?"
Watch and all the other rumored products doesn't seem appealing to me, particularly the 
