[lgieron]

In my experience, you can't really try to be good friends with someone - like with love, it's more about finding this special person (or a couple of them if you're lucky) with which the friendship seems effortless and just works naturally for both of you.

My advice is - in spite of previous dissapointments, you shouldn't give up on people, but keep on looking for this "natural" match. IMO, for most people, having a true friend [1] introduces more happiness than any professional/financial success, so it's definitely something worth pursuing.

[1] Bonus points if that true friend is also your spouse.