orionsword57: I've known one woman in my life who stayed in a relationship "because of the sex" as the man, while not overtly abusive, lived off of her and was basically an idler. She is a woman who was very open about her likes and needs regarding both size and stamina, and though very self-reliant, hung on to him. His attitude was... "hey, you need a man like me in bed, take it or leave it." It took her 5 years to dump the guy. Just one example, but it happens.