Is it just me or just guys

I have noticed a pattern within the conversation i have with guys.

I similar topic comes up and it as happened so often that i have to ask myself what is provoking this conversation.

The conversation i an worried about is how every time i talk to a guy, weather he likes me, i like him, or we are just casual friends and one some occasions guys i date (who i eventually leave for obvious reasons), they feel very comfortable about telling me how fine, sexy, bad, another girl is.

I usually have not a single clue on how to respond to that so i just bluntly say “i dont know what to say to that but okay” in a joking slight uncomfortable manner. But that doesnt stop the ranting.

Now dont get me wrong im not upset at this, im more confused about why guys (even those i barely know) feel so comfortable talking to me about their sexual interest in other females.

Like..... it is just me? Do other girls experience this? Or is it just the mannerism of guys?