Do some women lose interest in sex as they get married/older?

[Archibault]

Hey guys, So after talking with many SD's it seems one of the reasons for them getting into Sugar dating in the first place was because their wives and/long term partners stopped being interested in having sex. Meanwhile, they themselves kept their interest high. Hence this discrepancy. On one hand the men kept wanting to have sex while their wives weren't interested anymore. I wonder how common or uncommon is this situation.