How long ago did you have your baby?
When I first had my son, I felt horrible about myself. I had gained a lot of weight, had a ton of excess fluid (due to preeclampsia), and was the heaviest I had ever been in my life. I wasn’t allowed to start working out until 3 months after giving birth (because of extra bleeding after having him), so I can understand the dip in your self-esteem. Once I was able to start working on myself and losing the weight I gained during pregnancy I felt a lot better. It took work, but I lost a good bit of the weight (never made it back down to my pre-pregnancy weight, but that’s okay because I have new curves that I love).
All the television stuff aside, it sounds like you need a self-esteem boost. As far as what happens between a couple, it really depends on the people. Some men have a hard time getting past the idea that the baby just came from inside of you. Some of them are afraid of what sex will be like after baby so they avoid it, which doesn’t help how you feel about yourself (I know, been there done that). That being said, it doesn’t have to stay that way. If you are going through something similar, the best thing you can do is talk about it. Perhaps have a date night. Get dressed up and focus on each other (assuming you are comfortable with having someone watch your baby for a few hours).
Woman are attractive even after giving birth and there are plenty of men that think so. Having some confidence about yourself helps. I ended up getting divorced and was a single mother for about 5 years. I dated a bit during that time and eventually met my current husband. So, there are definitely men that find women attractive even after she has a baby.
As far as a world view, as the others pointed out, it’s really going to depend on where you are in the world. It will change a lot from one culture to the next as well.