What is the best response to "how tall are you?"

Im a guy 30 5ft 7" this seems to always be the hot topic litrally right after saying hey with females i don't care about my height I've had no problems dating but curious to know what responses people give? Because sometimes i usually find my responses pretty rude which make me seem like I'm upset because im not no 6'4 monster so my responses are usually like "why? what does it matter" or "you're the definition of a red flag"... I've been on there a while and probaly 8/10 matches I've had have asked this question some have even unmatched when I tell them haha.

What sort of responses do you guys give? And girls: why do you ask this question?

i should mention prior and edit this. It is already in my bio