haven't read any of the previous posts .. bear that in mind
i think that relationships are a good thing. it teaches you to think about others and care for other humans in a way that friendship ( even best friend-ship) doesn't.
also, it is part of the human maturing process. if you've had relationships in your teen years , by the time you're... say, 20, you already know how to deal with and treat the other sex. it's also a great help for people to realise their true self regarding disappointments and happiness, as there are always ups and downs in relationships. this would help in later life
when you get serious problems .
and about the thing with hurting people etc. it's better to learn through mistakes than to avoid the problem altogether
anyway, just my opinion. feel free to reply