Geez dude, don't say that. The problem holding people back from doing wall flips isn't usually ability, but fear (as is stated multiple times in most good tutorials). Unless you weigh like 300 pounds, you can probably do a wall flip (hyperbole, of course >_>). Being more fit helps, but it's just form and overcoming all fear. Your statement doesn't really help that fear factor for some people -_-". Yes, because of fear. If it's your first time ever, you probably aren't going to land it because you will decide to change your mind while you are in the middle of it, which is the worst thing you can do. I saw many people try it in the gym, I don't think I've ever seen anybody do their first one by themselves.