Despite all the progressive bullshit about how sleeping around is totally okay, some people still don't want to date a slut or a man-whore. Don't be so offended.
Sleeping around is perfectly ok on a personal level. Filtering your own sex partners by the criteria you choose is also perfectly ok. Both are taking personal control of your own sexuality even though they may seem conflicting to you.
(Personally I strongly prefer someone whose sexually experienced, but that's just my preference.)
Some enjoy casual sex like eating at a new restaurant. Some enjoy long lasting relationships.
I dated girls who had a lot of casual sex. I thought that’s what I wanted. I hated it. They saw sex and love as different things. I didn’t.
I’m with someone who’s only been in couple of long relationships before and I love it.
It’s just personal preference.