Pretty much forever - even if anything goes wrong, you can just swap out the SSD and the battery, and it will be brand n...oh wait, it's a Macbook! 

I'm getting an iMac because I want a Mac desktop as well as my MacBook. I'll still be using my MacBook everyday. I may not end up getting the iMac it just depends.
With a Mac it's more 9-10 yearsmy classic 2012 is a champ. the second it got slow I dropped a SSD in there and it's been great ever since.
I also have a 2006 that still works.
I would say an upgrade every 5-6 years is about right for a laptop.
This one is proving to be more to look like 9-10. They still haven't really released anything that much better than what I have. The SSD made it run like new and I can always throw another 8 gigs of ram in it..With a Mac it's more 9-10 years![]()
My 2009 15" MacBook Pro is still in use as a computer with external display, mouse and keyboard at the office.I bought my second MacBook Pro 3 years ago and all is working perfectly. I look after my stuff and it's always kept in a sleeve unless in use. It's not used heavily but I was just wondering how long do they last? Also, how often do you guys upgrade your Mac's? I guess it's not the same as iPad's and iPhone's that Apple upgrade every year.
Just wondering what you guys think and do?
I have an early 2011 13" MBP (Intel sandy bridge generation CPU) and it is either broken, or else these latest versions of OSX ("macOS") have simply obsoleted my Mac, because it is SO SLOW. Just...unbelievably slow. Even simple tasks requires a lot of CPU fan ramping to max RPMs, bouncing dock icons bouncing dozens of times, and not rarely also display of that accursed beachball mouse pointer, even though I upgraded my Macbook to 8GB RAM (so whatever is going on with it is not running out of memory related.)Just wondering what you guys think and do?
Typically, how long will they last thru Apple's security updates? Provided my 2015 MBP holds up hardware wise, software security updates would be my deciding decision. And I am hoping for 5 years on my 2015. By the time it is not supported for an update, I am hoping Apple has really made my ipad capable of replacing a laptop.
hardware is obsoleted via firmwear after 5-6 years, on all makes and models from all manufacturers
the physical machine may work beyond 6 years but the system will be broken down via updates
I can NOT second that. My mid 2009 MacBook Pro is now more than 8 years old, and is just as fast (or slow, if you compare it to current models) as it was back when I bought it. It shipped with OS X Leopard, and got all updates until El Capitan. Yes, Sierra is not supported on that model, but I've yet to see a piece of software that won't run on El Capitan. It'll probably take another two to three years until I'd call that notebook obsolete, and at that point, it served more than ten years. And I mean ten years of multiple hours of use pretty much every single day.
Well you're either on the edge of the bell curve, or have a light use case. OP would be completely kidding themselves if they were planning on buying a MacBook now and relying on it until 2026. It's even a bit rich to expect to rely on it till 2023.
I mean, obviously every once in a while it happens (great for you), but I've certainly never had a computer legitimately useable for professional applications for more than 5 years.
This. I had a mid-2009 MBP that worked like a champ for 7+ years, and when I realized that it just didn't cut it for what I had to do I upgraded and gave the old guy to my parents, who are still perfectly happy with it. I couldn't do any "pro" stuff on it anymore, but for their needs it's still perfect.As for professional applications - I don't use my 2009 MacBook Pro for any heavy lifting since 2012 - I do that on a desktop Mac now. But that doesn't mean that there's not tons of typing and office work to do which I still do on that notebook. Just because editing 4k videos or developing high res RAW images isn't any fun on an 8 year old machine doesn't mean it's useless for either private or business use.
I bought my second MacBook Pro 3 years ago and all is working perfectly. I look after my stuff and it's always kept in a sleeve unless in use. It's not used heavily but I was just wondering how long do they last? Also, how often do you guys upgrade your Mac's? I guess it's not the same as iPad's and iPhone's that Apple upgrade every year.
Just wondering what you guys think and do?
Depends. You might want to check out local repair places. I have a friend who charges me like 150 for screen repairs.mine is non retina mid 2012 15" MBP. It just survived the Apple ASD test and going strong, albeit there are a few vertical dead lines on the matte screen!
I am not sure if I want to pay USD 600 for the repair![]()