Life is made richer through experience, so it's better to love and then lose that love than to wonder what might have been. I spent many years wondering that, not giving people a chance. When I finally did, I haven't ever regretted it, even when that love made me sad, or angry, or confused.
After all, what would I have if I had not let this person into my life? Perhaps I would have more time to write, have less miles on my car, and get more sleep, but emotionally, my life would be emptier. I would be doing myself a disservice not allowing myself the experience.
It's not all sunshine and roses, but I wasn't expecting it to be either.