At least android phones can still download apps from the google app store, older iOS devices are just cut off. I have a perfectly good original iPad that's basically useless. The iPad 4 is similarly useless.
>My last machine was a 10-year old 27-inch iMac that I still use as a server.
My current workstation is 10 years old, running Windows 10 like a champ. It's got one of the first 6-core CPUs in it, a recent graphics card, and 32GB of RAM which I may upgrade to 64GB because it's cheap - I have no real reason to get a new workstation, this thing is still running circles around most recent quad-core systems. Your 10 year old mac wishes it were this capable.
I feel really sorry for anyone buying a mac now, since they will be obsolete as soon as the ARM macs are out.