I honestly don't know. There are a lot of things that happened in my life that sucked. Things I did or things I didn't do, and far more that were more or less outside my control. The thing is, is that I keep bumping into really good things in life that probably wouldn't have happened without going through the crap first. A small example is that I worked a crap job, slowly climbed the ladder a bit, worked... okay but it stagnated. We got bought and at the same time I got a job offer elsewhere. Cool--but that job offer turned out to be an absolute nightmare. I jumped ship immediately and came crawling back to my former job.
A lot of pain, a lot of emotional turmoil, wrapped up in ALL of that. But in the end I wound up making more money than ever, and learning new skills that I'm way more passionate about. So a net win. But I did have to go through crap to get here.
This just keeps happening. Over and over, on small scales and big. So as much as I hate the bad stuff, I probably wouldn't change a thing. I like the good stuff too much.