The 2015 MPB 13" 8/128 I'm using to write this post has been a total champ. Other than new battery service a couple of years back, it's just been 9 years of working all day almost every day without a hitch. Everything still works as well as the day I brought it home.
That said, going into this year I can feel father time catching up. Support for current MacOS versions ended two versions back--Monterey is the latest it can take--and this fall security update support for that will end as well. iMessage / Safari / Notes / iCloud syncing services with my current-versioned iPhone have gotten a little slow or a little sketchy, too--understandable given the number of changes and new features on the iOS end--but that will only get worse as time goes on.
Personally: if I were in the market for a highly capable $500-ish-or-less computing device, I'd make a bee-line to an 11" M2 iPad Air or the latest regular iPad. If I could stretch to $650, a brand new M1 Macbook Air (available from WalMart at that price) would also run circles around a 2015 Intel Pro in most practical ways and would receive updates and new features (notably, Apple Intelligence) for years to come.
My sense is, unless you have specific must-cover workflows requiring older Intel-Mac specialty software or 32-bit apps running an older MacOS, the 2015 Pro's time is coming to an end. And it really did have a GREAT run.
That said, going into this year I can feel father time catching up. Support for current MacOS versions ended two versions back--Monterey is the latest it can take--and this fall security update support for that will end as well. iMessage / Safari / Notes / iCloud syncing services with my current-versioned iPhone have gotten a little slow or a little sketchy, too--understandable given the number of changes and new features on the iOS end--but that will only get worse as time goes on.
Personally: if I were in the market for a highly capable $500-ish-or-less computing device, I'd make a bee-line to an 11" M2 iPad Air or the latest regular iPad. If I could stretch to $650, a brand new M1 Macbook Air (available from WalMart at that price) would also run circles around a 2015 Intel Pro in most practical ways and would receive updates and new features (notably, Apple Intelligence) for years to come.
My sense is, unless you have specific must-cover workflows requiring older Intel-Mac specialty software or 32-bit apps running an older MacOS, the 2015 Pro's time is coming to an end. And it really did have a GREAT run.