I don’t Face or Twit either.
Since we moved to KY and most of our family is in Seattle, Chicago, Napa and Minneapolis, we use it a lot to stay in touch with each other.
If someone asked for my password via the power of the gun, I’d just create another account with my credentials and change the credentials of the real one temporarily (different picture, location, background, etc.), I’d then give them the key to the new one. Or I’d wipe the old one of all activity and friends and THEN give them the password - and create a new account.
But the exercise is silly. They don’t have the right to my password. It’s personal and private.
I use Linkedin just for professional reasons to keep up on flying jobs, etc. That’s the sum total of my social interaction with people in my field.