I've met both JWs and nonJWs that ask a lot of questions like this that can be perceived as overly familiar. I don't take it personally or get offended. My parents would probably be considered by some as "heavy questioners", but it was part of their desire to be conversational. I've often encountered it differently with different cultures. Where my parents wouldn't inquire about "are you married/dating/seeing someone/interested in getting fixed up with someone I know", I've been around plenty of other cultures (including nonJWs) where this was their next question after my name.
It kinda depends on my mood and whether I feel like engaging. If I'm really uncomfortable, I excuse myself for whatever reason, to go to the bathroom, or get something to drink, then not rejoin them. If I do feel like engaging, and I usually do, I make my answers sincere and interesting. I think that anyone who's read some of my many posts will understand that I never give one word answers... well, except for new members where I may just say "welcome".
what are your parents names?
Ask me that and I'll engage you in a conversation for several minutes about my family history and ethnicity. It's a conversation I've had many, many times. Then, it's polite to inquire about their family
I dunno, maybe I've just been through all kinds of personal questions enough times that they just don't bother me that much.