"Do you know what you're having yet"

THIS QUESTION. I don't mind it coming from friends and family. I understand why they want to know, and they respect me when I say we want to do a big announcement and until we get it together, we're keeping it secret. BUT, people that I either, haven't spoken to in a ridiculous amount of years or never at all are sending me messages through Facebook asking if I know the gender yet. Like wtf?? And then, getting mad when I tell them it's a secret!! Like if my friends and family understand why I want it secret, why don't strangers??? I explain it the same way to them only they reply "well you don't even know me so why does it matter" THE FACT THAT I DONT EVEN KNOW YOU. Like tbh it's obviously that they're curious more than anything, that they don't actually care. But that doesn't even bother me as much as them getting mad at me for keeping the sex on MY baby a secret. Okay, rant over. 🙄