I have no regrets about Runescape, I started in 2005, so I was in 7th-8th grade. I played Runescape because I enjoyed it, the grind was fun in moderation, and I loved accumulating wealth and playing with my real life friends.
Luckily for me, I played Runescape during the 'craze' era, which is to say that everybody and their grandmother played it. This made it a lot of fun, the only time it became a problem in the real world for me is if one of my friends had scammed another...then it got pretty ugly.
As for my parents, my Dad hated the game. Pretty much anything I spent too much time on he hated. Whether it be Xbox 360, Runescape, or my elementary fad, which was Yu-Gi-Oh!. He HATED that, but I think by the end of my runescape days he hated runescape even more. That was until I made 5,000 dollars from RWT'ing to help pay for College. This certainly awarded RS some brownie points in his eyes.
As for social life, yeah...Runescape didn't really help. My one girlfriend thought it was 'so cute' hahaha whatever that means. I outlasted all my friends on RS, so while I wouldn't get made fun of for it, they would question why I still played...not that I cared. I do what I want, not do what pleases others. Why the hell should you care if they don't like what YOU'RE doing. It's your life, not theirs..and the fact they have to rain on your parade speaks volumes about the pathetic life they probably lead. It's one thing playing Runescape, making fun of someone for playing it most likely means you need a good kick in the ass.
I wholly enjoyed my time with Runescape, and while addiction set in at times, especially getting 99 RC via natures/ double natures in Abyss, I don't regret any of it. It also helped that I used a survey site to get free members. Therefore I did not have to pay the exorbitant cost to keep my account a member.