God. I mean, this question gets broken down into sub categories.
In terms of looks, if I were basing my relationship on sexual attraction, hotness of the dude, the body, and all physical aspects of the guy alone - soccer. Do you fuckers really need to even ask that? I would date a soccer player (name a couple, I'd probably agree to it) in a heart beat. Would I date soccer hottie? I don't particularly see that becoming a discussion anytime soon, thankfully, but to be honest, I enjoy my situation with him too much right now to fuck it up with feelings and tears and fights over the fact that if he's cheating now, he'll probably cheat with me too (as much as I like to think my bagina is amazing and all). So Soccer Hottie has his place in my life, and I'd like to not fuck it up. Again, I don't see that being a topic of conversation anytime soon, so it's a moot point. I get along with him really well, the sex is awesome, he's pretty fucking funny....I like our setup.
In terms of what sport I think would produce the most loyal boyfriend/husband? Ooof... I mean, fuck dude. They all cheat, seriously. But on that token I'd probably go hockey? From what I've seen, those guys seem to be the most loyal. My old NHL fuck buddy has a serious girlfriend now, and I would put money on the fact that he doesn't have a wandering eye (except when he gets drunk and his eyes go in two separate directions, no big deal). The hockey schedule also isn't too brutal, and I could settle down with a Canadian. From what I've seen and been a part of, I feel like there's more stability here, I don't know why.
In terms of what sport I think would be the coolest to be involved with on a serious level? Part of me says baseball, but if it wasn't the Yankees, it just wouldn't be that fucking cool to me. Even though I'm not into them, I think dating a football player (if you could get passed the size, infidelity, etc) would be pretty fucking cool. Football's following is awesome, I think it'd be way fun to cheer for a boyfriend or husband on the field. Cough Nick Schommer cough. I'd pull it off wayyyyyy better than Jessica Simpson ever did.
What else is there? I mean, I've dated athletes and the distance and the trust issues and the injuries and the stress of the game kind of blows sometimes. So when people ask why I'm not chasing down dudes to date seriously, it's more fun to be laid back with that shit. But yeah, I could name like, 10 soccer players I'd like to date just so I could be like "this guy is dating me and I get to see his penis on the regular". Sad, but true.