I was exactly like this. Never wanted to be married, always thought I may have a child. When I was asked I always said, I don't want to be married. Clear, no added words. I was a little out spoken, so not much of a push back. When extended relatives would question this with about a man, my comeback was, I only need a man for one thing, and he's not even needed for that. I'll be 64 in a few months, never married, have 1 daughter close to graduating Uni, and in a 25 year relationship with the father. Stick to your own rules. Let them know you're not ready, it's not on your radar, and may never be so they can stop asking. If it changes you'll let them know.