I used to watch the sport sporadically here and there, but I never followed it like I do now, until I saw UFC 46 with GSP vs Karo. After that fight I became a huge fan of GSP and I've been a hardcore mma fan ever since. GSP basically brought me in to this sport, so it's hard to believe it's the end of his career. I remember I used to download his fights on kazaa or whatever and re-watch them over and over when he was like 6-0. He had so many good fights over the years, and no other fighter has given me that same feeling of anticipation before a bout. I was always so hyped and nervous before a GSP fight.
He also represented Canada well. He trained hard, learned every discipline, did all the right things and took his career seriously to earn his spot in history. He never had any shortcuts to the title, and he always fought the best guys in the division. He also fought these guys at a time when they were all peaking and at their best, which is what makes his run even more impressive. When GSP came back to fight Bisping it was the first time in a long time where I was genuinely hyped. I don't think there will ever be another fighter who gives me that same feeling before a fight.
I'm just glad he went out on top, and I think if anyone deserves to be called the GOAT, it's GSP.