I watch romance animes for several reasons. Its a break from the many shounen animes that are exposed to me. I don't watch many animes at all but if I do its usually Bleach, Naruto, etc. I wanted something different so I turn to spice of life animes like AH My Goddess or School Rumble. Another reason is because I can't really get a gf. Rejected since high school. I've lost count on how many times thats happened. Even after getting to know them I guess I'm still not good enough for any of them. So I set aside my own happiness (which I don't have anymore) and watch other couples' romantic story. It takes away my depressive state.
I always feel happy for the couple and stuff. And I always tell myself "I wish I didn't look like me so I could have that too."