Wasting money from someone else

I was the RK (rich kid) nickname in class cause I'll be throwing money here and there from my classmates or just roll it money on the ground and watch them fight for money. It was fun but I realize how fake they're and used me. It doesn't look like bullying but it does. I never had hobbies back then so I mostly waste my time doing nothing with the money I've been receiving. I look at is as just a piece of paper that never gave me happiness. Until I gone to College and also when I found myself a hobby. I really regret not using those money to buy figurines and cosplays at that part cause all I've been doing was drawing, I do get money out of it but I should've pursue that too.