Allowing us to write our gender is actually a good idea. I would also love the option of allowing us to write in our political affiliation and many other options. 

This could allow us to mass find or mass block people with certain views. 

Nostr or relays could also gather statistics on how many male, female trans etc are on nostr.

gather statistics on how many liberals, conservatives libertarians etc are on nostr

I might have to request this on github

We currently have no way to find or view statistics on what type of people are on nostr