Me personally...
I have benefitted from monogamy. I used to get a lot of girls, but I dunno...I like the exclusivepussy thing. For example, you get more experienced with the one girl and then you know her specail spots, exactly how and where she likes it. I have not gotten bored with my girl because we're always trying new and kinky shit.
Oh, and I'm not a virgin if you haven't figured it out already.