Bowling

I just got home from bowling with my friends and I lost tremendously. And I'm wondering why? Why do I suck at bowling? I know I haven't played much in my life, but I should at least get through one round without a gutterball (miss both tries). I had more than one of those tonight. Why is some people really suckish starting out and some quite good? couldn't all be semi-good and then develop into crap or champions? that would be fair.
but it's fun anyway^^