I loved it when I was growing up. So many amazing games on it, and the PS1 is where my love of JRPGs really bloomed. Final Fantasy I-IX and Tactics, Chrono Trigger/Cross (never had Trigger for SNES), and Legend of Dragoon are games that I really loved. Spyro 1-3 were other games that I absolutely loved for it as well.
Sadly there are a ton of games I missed out on for the PS1, but luckily I can get most of them on PSN now. Alundra, Legend of Mana, and Vagrant Story are three of the major ones that I missed out on.