Well I don't know much about the North American sports, but amateur boxing needs to be safe. Even then you kinda know that you're not a pro boxer, because you'r

Well I don't know much about the North American sports, but amateur boxing needs to be safe. Even then you kinda know that you're not a pro boxer, because you're encased in a soft helmet. The thing about golf though, is that it's one of the few sports where you're in the same stadium (venue/whatever) as the pros. As in the exact same place, not a mini stadium for amateur athletes or a random football pitch in the park, or a boxing ring in some gym. So you can feel that in most sports, you are not really like one of the big boys. I wonder how much players care about that. In any case, why is there this line between the ball and the clubs? Why is it better to change one but not the other?