Having played it on and off majorly for about 9 years (back when there was nothing past varrock) I cant give really give it the "It's Bullshit" bandwagon that most people jump on, as previously said the mechanisms are sound while majoritivly the skills are just Time Grinds its really about the personal choice of what you want to grind on or increase to do something else.
The quests are much more intresting than regular MMOs as you can prolong them or simply complete at your own pace, although sometimes tedious with collecting random items for quests most are intresting and some offer well thought out rewards.
The combat has evolved alot but still it not the most intresting you will find, runescape is more suited for players who are looking for a personal acheivement in your own experience type of gameplay.
And like many stated it is not entirely filled with 13yr olds, but if you are going to join i would advise members as has been mentioned
