I'm A 38 Years Old Woman, My Husband Is 55,

I'm a 38 years old woman, my husband is 55, he has no sexual desire but I do and we never have sex.
I reached a level of being horny that made me let people who do sexual harassment make me reach orgasm.
I had enough of that so I started to look for a man to be in love with, I took off my weeding ring then I knew a nice guy 2 years ago, I felt comfortable with him so I told him everything and he understood, we quickly gone into relationship and he showed me a lot of love and made feel that my body is still wanted by men, we're having sex everyday since after we finish working. (He's married too)
Am I right by having sexual relationship instead of leading to the destruction of my family by divorcing? I think it's my right getting sexually satisfied if my husband isn't going to do that, my husband isn't even showing me a bit of romance he's treating me like I'm a house-keeper.
I'm living in a country that sons live in their parents house till marriage and I know if I divorced how bad that this will effect them, so I'm just getting sex from external source.
I don't see anything wrong with it, I'm atheist also and I don't think marriage does prevent me from having sex with others if needed, I consider marriage as a relationship with contract so since it's over with my husband i'm free to enter a new one, In papers my husband is the one I'm having a relationship with but IRL I'm having one with my boyfriend, Please don't remind me of law, society and so on because it's just a social norms and people in the beginning of the mankind was having unlimited sexual relations without knowing something like marriage, just tell me if you think I'm doing the right for my family, Thanks.