I think that for some (the majority) of women, a penis is something that they have to deal with to have a man in their lives.
For bi/gay men, a man is what they have to accept in order to get to his penis.
Women in general just don't love cock like a gay /bi guy does. We like the feel, the taste, the texture, the manly smell and what come out of that wonderful penis. So, it's just natural for us to adore and suck that man tool with a lot of affection, feeling lucky to have a penis in our mouths.
THIS!!!!