It is extremely hard to be good at it. I have been looking at some tap dancing videos on the internet over the past few days, and I am literally amazed at some of the moves that they are able to do. Of course, if I didn't tap dance, I would probably never know how hard the moves were and I would most just judge the people on how much noise they made.
All I am really doing is making the obvious point that everybody knows already: the more that you know about something, the more you appreciate it.
So the next time that you bank on tennis or golf or meditation before you even try it, sit back and think about whether or not you know enough about the subject to really comment on it. Yeah, I'm talking to you, Andy.