Lost weight, now I'm getting attention from women. Are they worth it?

Admittedly, I was 290s lbs, and at 5' 11" I did NOT look good AT ALL. I was not healthy either, in fact I was dying. Lost 50+ lbs though and some women are showing interest whereas they weren't before. Odd though because I'm still 40 lbs over what I'd like to be. Question is two parts: why do they seem to like me when I'm still overweight, and are these women worth it (are they shallow)?