Believe it or not there is a whole forum here devoted to people who are STILL using PowerPC macs, 14 years after the Intel transition, for many of the same reasons you mention above. Your computer is as fast as the day you bought it the software will still run on it as well as it did 14 years from now. Maybe you are a one computer guy and that's cool, but you can always hold onto that Intel mac until you come up with another solution, or until you move on. Steve Jobs when he was at NeXT famously said that any computing platform will peak in 5 years and be dead in ten. Ok, Apple was a little slow with the ARM transition but we've been hearing these ARM rumors for years, right? M1 is the death of Intel on mac, maybe Intel forever, unless they or AMD can come up with a viable competitor. Which is frankly kinda hard to imagine.