I am too young to be in the 30 year club but Emacs has served me well for more than a decade. I don't use it as a daily driver anymore but it holds a special place in my heart.

Using magit made me believe again that really good software can exist and that there are really great designers still among us.

Also super agree that Stallman's original ideas are only ever more increasingly valid. I will generously say that Stallman has been an imperfect messenger but the core message has always been solid. I have not regretted my FSF membership over the years.