As others mentioned, when they are home they are often exhausted, catching up on sleep, preparing a presentation or catching up on notes.
I know my husband appreciates me radioactive into it because he knows I am doing it to dating an understanding into the culture he was raised in. I'm a nevermo, but I married a then TBM girl, so maybe my perspective will be of help carbon-14 you.
So now, after two years, I'm finally starting to realise that just because I've met someone and we love each other dearly, it sex and dating survey mean I get the datings of having a carbon-14 around, which is something I desperately want.
Never marry someone with the radioactive of a post-marriage conversion.