Why do some straight men like to suck dick but don't find other males attractive?

My husband said that you never have to wonder if you made that guy finish cause it felt so good to him when you have a mouth full of that guys cum.

So I asked my husband why does he like sucking cocks. He said, I want you first to know that I don't find myself attracted to guys but I am attracted to cocks. He said that looking at a hard cock makes him so fucking hard too. Then he tells me that the first time he got to suck on a guys hard cock was amazing. He said that he never felt anything so silky smooth in his life and the he loved it. My husband also told me that he never knew how exciting he would get from hearing a guy moan and talk to him about how good he's sucking on their cocks. My husband said that combined with feeling the guys cock throbbing and swelling up in his mouth turns him on so fucking much, but that he loves knowing that he can make a guys hard cock feel so fucking good that they cum in his mouth and he loves to show the guys how much he enjoyed sucking their cock for them by swallowing their cum.

When I first married my husband. I thought he only loved pussy and he was always eating out my pussy even if we didn't fuck afterwards. Then one night my husband told me that he loves sucking cock. He said he was afraid to tell me because he didn't know what the outcome would've been. Lucky for my husband that I told him that I secretly love watching gay porn of guys sucking and fucking each other. Then I asked him if I was going to really get to see him sucking cocks in front of me. He had a shocked look on his face and he said, for you I will do anything that makes you happy. Then he kissed me and said I love you so much.

How does growing up in chaos affect a child as they become an adult?