I think the same can be said about "hunting" in general. Even though we're all hunters, some times the "chemistry" just isn't there. There's so many variations that come into play from experience, to determination, to skill, to shooting ability, to physical ability, etc. and then mix in each of our dispositions, it can be tough to find a "perfect" match.

Wait a minute, I sound like I'm trying to discribe "match maker" or somethin',[8D] but it pretty much holds true for hunting partners too.