What To Do in RS?

Sell your items then move on

 

Sell your gold, tell your parents what you're doing. They will support both you quitting and ending up with cash in your pocket.

Every parent hates seeing their kid sit on the computer every day...

 

Set yourself a skill goal. For example, get every 50+, then 60+, then 70+, and so on. Or, go for 3 99's at once, trading off every 5 levels. But you did say you hated skilling.
Boss it up with friends, try doing ridiculous solos (Bandos in bronze), or try to get one of every decent item (Corp for all sigils, GWD for all the swords/armour)
Just random stuff like that

 

I just recently turned my rune turmoil pure into a main, and am doing nothing but PVM and i'm LOVING IT!!! Never realized how fun it was untill now I would try it if i were you! Going to try corp for my 1st time soon!