<< i guess what i'm asking is...
if nice looking lady's naked picture is what you're looking for...
then, why swimsuit issue? why not ... say playboy or some other porn magazines? >>
You really can't understand why people would like a swimsuit calendar? Either you're impotent (even then i would think you could understand why men would want to look at beautiful women in bikinis), or you're mentally deficient (maybe you're lacking a theory of mind or you have the reasoning skills of a chimp?).
Here's a clue: Because they're nice eye-candy. Why some choose SI over Playboy? Some don't, some do prefer Playboys, but some do prefer SI because it's a bit more mainstream. Now, the reason why SI is popular culturally is because they do choose more beautiful women, AND they've been doing this for a lot longer (calendar wise) than any other competitor, so they have become more mainstream and accepted. Have a Playboy calendar up and you'll like run into trouble, but having a SI calendar up most likely you won't.
Am I right or wrong? i don't know, but at least some of us has the cognitive capacity to come up with ideas, something you seem to be totally lacking.