The thing about families (especially parents) is that, however well-meaning it is, they may think they know best and they may try to push it off on their kids. I don't think they're doing it with the intention of hurting you, or repressing you, but they think they're keeping you from bad choices. In their eyes, they're doing good. With that in mind, make your own judgments on these choices because they're your choices, but accept that sometimes you're going to have to give while you're still living under their roof. Sometimes it will be worth standing your ground, other times not.