It does.
I have a friend that got in a relationship, before that we always do lads night out once in a while, after the relationship, he can hardly come out, she wants him to be indoor most of the time, so we hardly get to see him. He DOES want to come out, just she didn't want him to so he doesn't go out to please her, his freedom IS limited in this case.He is single now and he is much happier and he doesn't want to go back to that again.
There are probably a lot more examples out there that having a partner DO limit your freedom, it is not what you WANTED, but you had to compensate or you want to keep the peace in the relationship so you decided not to make those choice. That is not "a change in perspective", that is "a sacrifice in order to get sex", which I am really against.
Nothing wrong with relationships, people are in it because they are happy in it. But there are a lot of sacrifices to be made, it is all depending on if you are willing to make those sacrifices for the person you are with. For me right now I am happily single until I meet someone that I am willing to make those sacrifices for.