I don't get why people would potentially pay money to get boosted to a rank where they have no chance of competing? What do they do once they get boosted to their goal rank?

I am currently playing on a 30Hz minitor and I was wondering if upgrading to 60 or 144Hz would improve my performance. I currently get 130fps out of my setup and I was wondering if my screen could be bottlenecking the performance that I’m g...