I feel the same way. Life sure seems easier when you have a cold heart. At least you won't have to worry about getting burned.
But that's just not who I am either. And I wouldn't want to be.
I just want to be appreciated for my willingness to work hard at something. Relationships take a lot of work, you have to make a decision every single day to work on it. I was willing to do that, she wasn't. And that really stings because there were times when I could have easily made a justifiable exit. But I decided she was worth it, that she wasn't perfect and neither was I. So I stuck it out.