I took my brothers account, "had written down on paper in like 04" and started playing, i had fun, but ALL i did was cut trees. i quit for like 2 years, started back up. got my first 99 with'en 3 weeks of playing, haven't quit.
I've always enjoyed the Player Killing aspect of the game. Recently quit because of a few updates that I really didn't like. I play different RSPS now. =]
Personally I heard about it from some friends when I was young. I played it for a little bit, bought membership and got to about level 50ish. I really lost interest at the time and didn't play it again until 2010. I was a little bit older and decided to give it another shot. Long story short - I'm near maxed now.
I was young, and the area I lived in only had 3 kids. I was about 7ish, and the other guy was around ~ 14/15. He made me my first account named: Imadogbrain.
A friend of mine in sixth grade had just started playing in 2003 and I remember taking like two weeks to get off Tutorial Island and probally 4 solid months of killing goblins, but mainly friends but they soon quit playing while I continued on well into college and now graduate school.
I first came across the game back in the late 2004 at a friends house, and didn't think much of it .. then made my first own account in early 2005. The idea of doing what you want and not having set tasks to do all the time, the community and just the whole game in general was very good.
Back in middle school a bunch of guys that I hung out with regularly started playing. At that time I was playing Endless Online, but switched over. Great game, just dislike what's going on with the updates, etc.