A 32 year old Tabletop Role-Player and Game Master, playing since I was 6 years old, when my older brother introduced me to Robotech and Dungeons & Dragons, and allowed me to play with him and his high school friends.
If there is a game system I have probably used it once, twice, or a hundred times in different variations. And if I don't like it, they I have personally discovered a major flaw, an oversight that they playtesters and creators didn't notice or thoroughly work out properly, or just completely ignored. I am looking at your WhiteWolf, Pathfinder, and D&D 4th Edition (Coloring Books).