Why teenage boys get very embarred about being cradled/carried around?

Few days ago my 17 years old son went through Brostrom procedure and arthroscopic debridement on both of his ankles for chronic instability, at the hospital, as the operation completed, he shall not be able to walk for a little while. The problem is his bedroom is in the third floor, we decided the best possible way is to put him in the guest bedroom in the Second floor until he's strong enough to walk the stairs, as we have no available separated room in the ground floor, because we torn down most of the separating walls when we moved in, except the garage and a small storage where brooms and gardening kits belonged, that means he had to be carried around by my husband which he couldn't stand the idea, because it is embarring according to him, especially when his friends come to visit, like for god sake it your own dad! can't you just cooperate?! either my son is being impossible or we are the one who're treating him like a child?