My friends are less available because their partners are spending time with them, which I seems be the case for the majority of married couples. I also prefer to spend my weekends with DH and DD. If I spent as many weekends away I would feel like our family time would be seriously reduced
But he is spending the majority of weekends with you and Your daughter.
I actually agree that it seems a lot, but throwing in 'everyone else wants to spend time with their partner is putting a spin on it that doesnt need to be there. You are saying that he does this because he doesn't want to spend weekends with you.
Where that doesn't seem the case, he just wants to see his friends too.
If you arent happy you arent happy. You need to discuss this.
I disagree with AnyFucker and this statement Some women will put up with any shit to stay in a relationship and try and make others as fearful of being alone as they are
That's bullshit. If OP in unhappy there is nothing wrong with her staying and trying to sort this. Not everyone has to walks way the minute there is something they are Happy with. This might be something that didn't bother the op before kids and may not in a few years when the child is older.
Looking down and belittling people who don't want to split up, the instant they aren't happy with one aspect, isn't helpful. It's something you do to make yourself feel better.
And if you really feel the op should leave, do you think that sort of things helps her leave?