I started with tabletop RPGs quite late I guess, when I was around 22, which leaves me with about 4 years under the belt. I started GM'ing soon afterwards. My main problem have been finding people to play with, hence I started GM'ing as that proved easier. Life does seem to get in the way, and even with roll20 it can be hard to find a decent group, since it appears to me that most people on here are from the states, which leaves quite a time difference for us Euros.
I like to play Call of Cthulhu a lot, and have been looking into Trail of Cthulhu. But my main mastery is probably 3.5. I've considered transitioning to Pathfinder for a while, but never sat down to read the core books.