You get a new visa every year? An extension is relatively cheap. I did it for more than a decade pre-covid, and I think it was something like 1,900 baht per year. I don't remember exactly, but it wasn't a lot.
Many generations have had questions like this.
What did people do before smart phones?
What did people do before the internet?
What did people do before TV?
What did people do before radio?
What did people do before electricity?
etc.
One day it'll be ubiquitous augmented reality, then virtual reality, then the computers take over and keep inventing new forms of entertainment to pacify the meat-creatures.
????
I've purchased from apple.com/th many times using a US credit card, including one item I later returned. All went smoothly, free delivery on everything and free pickup for the return.
You do sweat while swimming but you don't notice it. Nordic walking you may have seen. It's using the poles and is supposed to be very good for working many groups of muscles. Still looks a bit silly to me, but that's my problem, not theirs. It would also help with the knee.