It really puts us all to shame. I've been guilty of hiding behind my perceived limitations on many occasions over the years. And I hear it all the time in the gym - grapplers claim they can't do this or that because of some inherent physical limitations (or worse - a minor injury).
Well, we were all wrong, because we can clearly do anything ... if we want it badly enough. So, go sign up for Pan American and bring home that white belt gold despite your excessive freckling and/or slightly stubby fingers.