[awilfox]

Oh, my grandmother is still happily using her mid-2012 iMac, and my 2011 MBP is still kicking around for the occasional 32-bit only app (some older games mostly).

The problem is initial capex: you have to have that amount of money all at once, even if it is cheaper in the long run. Some people do not have access to even credit of that amount, let alone the cash for it.