I think she enjoys sex with others more, yes. She often talks about how great sex is with a new guy. Having his cock slide into her for the first time. She tells me how much she enjoys the 'forbiddeness' of it all, the make-out sessions, the cock-sucking, and having a new guy fuck her hard.
It's truly remarkable to see the transformation my wife has gone through in the last 3-4 years. In the beginning, she told me she liked the idea of hotwifing but it would have to remain a fantasy only. Now she's actively and regularly searching for guys to fuck. And open to talking about everything.
She still fantasizes about her first time. Loves to tell me about how great his cock felt inside her and how much deeper he was able to penetrate her. I think we got lucky with him. Going into her date she had no idea he had a big cock. But after experiencing it and realizing how great it felt, well, I think something in her brain finally clicked. Having a bigger cock, and different cock suddenly became a 'need-to-have', not a 'nice-to-have'. She knew after that first time she had to do it again.