Why do women like muscles so much?

I don't understand it at all... No homo when I'm saying this but on guys, I really hate the way it looks. Like all ripped and where you have these big *** arms and a 6 pack. I'm not fat but I'm not an anorexic emo kid either, but, I suppose you can say I look athletic. I'd rather be really skinny over ripped any day though... Like, I'd rather look like Billie Joe Armstrong or Gerard Way than Taylor Lautner. And don't bring up something, "Oh well, the same reason guys stare at girls when they have their boobs sticking out of their shirt." Because I tend to turn in disgust, I find it very unattractive to act like that. So what is it?