Why don't you reply to unsolicited DMs?

same for me. I used to reply to all, but without getting to know someone better in the public forum, the conversations kind of fizzle out. Or it goes back and forth with "hey" and then a dick pic. Now I only reply if we have chatted a bit before

It’s a sexual greeting
It’s says hello dear
I don’t know the user name
It’s in my request folder which means at some point we’ve already interacted in some way.
I don’t like them so I just delete unread

If they don’t sound interesting