It's a great game, but it's not for everyone.
When I say that i mean a couple things. Firstly I've played RS for about 5-6 years now and i am a level 103 with 2 going on 3 99s [I play on and off]. It's gone from good to well, lets just say jagex didn't do the best job.
Pros:
Skills: There are a lot of skills, although they can become very tedious. If you like the game then it's not a problem. Seeing how most games are tedious regardless of what anyone says.
Quests: At first this game doesn't seem so quest orintated, but this is only for free players. Once you're a member quests are really a must. They help a lot. Although they are not a "need" to do it's recomended.
Updates: The updates have been shotty to say the least, but at least they are constant.
Cons:
Community: Everyone on RS either
A. God and no one is better then them.
B. Spam the word noob to lower levels. [If you are a high level you are a no life and if you are a low level then you are a noob there is no in between]
C. The bots run the community and the Economy. I for one don't care if bots are around cause they help keep prices low, but they can get annoying.
I guess that's all I have to say.