110%
This is from the Jezebel review of "The Fault in Our Stars" and it perfectly articulates my feelings about being a parent:
"Personally, I never understood what it meant to be sad until I figured out how to be happy. The better my life gets — and I feel very, very fortunate right now — the more I realize that being in love and building a family is the most terrifying thing I've ever done. Is it worth it to fall in love if you're going to die in a month? Or in 50 years? That terror follows my happiness like a shadow; they grow and swell together. It is worth it (to me, I think, though how can I know?), but it hurts."