For one thing, Real Magick is a lot different from Tv magic. On Tv, they just blink their eyes, or wiggle their nose and there you are, a spell is born!
Real Magick takes a lot of energy. It is exhausting. Its much easier to do things the mundane way then with Magick. Thats one of the reasons an experienced Witch will tell you to use Magick as a last resort and only after you exhaust all the Mundane avenues available to you.
Another reason, is not everyone is MEANT to be rich, or beautiful or in love. (so remember, all you beautiful people out there, you'd not be nearly so beautiful without all us ugly old crones around. Instead, you'd be merely average, lol.)
Also, these are very shallow values, true beauty is whats inside you, True riches are not always monetary, etc. Someone whose values are so shallow or or who is so unconfident as to be so caught up in appearance and such is unlikely to be very good at Magick.
Magick takes confidence, both in yourself and your Magick.
Remember, this is my opinion, only. Not something written in stone. Others may not believe this. Take everything with a grain of salt and decide what YOU believe for yourself.