Erin has a lovely post about, well, loves found and lost, and the lessons learned with each finding and losing. Read it.
In earlier years, I used to read the work of author Richard Bach a lot. I haven't read him in a very long time -- a decade or more -- but I've always remembered one quote from his book One: "I gave my life to become the person I am right now. Was it worth it?"
Erin's post made me think of that.