One of the main reasons of the soccer bias/hate, in my opinion, is simply the lack of its presence in a culture or in the life of individuals.
Especially, experiencing the game itself makes a huge difference. First of all, the game is ridiculously fun to play, if you have played soccer in your childhood, most probably you won't be able to escape from being a soccer fan. In most of the world except US, kids start to play soccer and its hundreds of derivatives from very young ages, it's a perfect game for children as it includes almost all beneficial elements for children development, it offers support for many important aspects for kids such as health benefits, social skills, team/friendship skills, individual skills, fun etc. And it's very easy to play, you don't even need the main object, a soccer ball, to play it or a derivative of it. Even a bottle cap or a soda can, a stone or a sock ball, which I played with all btw, will work.
Besides that, on the contrary of the title of this thread, soccer has lots of things to offer to a man. First, it's far from being a wussy game. As its levels go up, the game gets tougher than many sports, it requires and demands serious talent and physical skills. Beyond that, I remember reading somewhere that many studies suggest that Soccer might be fulfilling/replacing the needs and ancient acts of men that they can't do in modern life. Like collective hunting, battling/fighting, harbouring animals etc. There were many symbolic relationships stated between those acts and the rules of soccer in the article but I just can't remember much of it.
As for the claims that it's boring to watch, I partially agree on that, especially after I started to follow basketball I became less interested in Soccer. But the claims are just way too overstated and only true for the lower level competitions or the matches with bad football on the field. Plus if you lack the knowledge about it, you won't enjoy it much and you won't even know why you can't enjoy it. The more you know about the game on the other hand, the more you will love and enjoy it.
For instance, if you can't notice a team's tactical arrangement on the field in a minute or so, that means you are just a novice soccer fan and you are missing a lot of things. However, if you can see the strategies that teams are trying to apply, if you are able to see the moving defensive/offensive blocks in a game, if you know the players' individual traits, teams' strengths/weaknesses and game styles, the managers' game philosophies and so on, your pleasure from the game will be on another level.
Anyway, for what it's worth, I was biased against the American Football too, until the last year. It was just too long, too boring and complex/meaningless for me back then, now the more I know about it, I actually started to enjoy it and I watch good games from time to time on the internet when I'm bored and have some time to kill. At the beginning, I was just wondering about that virtual line on the field and all I was doing was following it the whole game. But now I'm discussing about quarterbacks with my friends who follow the NFL. So it is a huge difference for me, once I removed my prejudice and I believe it would be the same for soccer haters, not just for the ones in the States but everywhere.