[asciimo]

I like learning about these legacy systems precisely because we are past them. They are no longer being extended. What I learn about e.g. 6502 today will be 100% applicable 10 years from now. I don't have that confidence with modern systems.

[tluyben2]

That is what I like about it too. The systems I have in my mancave and program for fun on, are from the early 80s. They are known inside and out (literally), they all still work and in 10 years they will be exactly the same.