People who try and make others feel bad for their own choices have nothing better to do I think.
If you do happen to feel bad its not because of what anyone else thinks, as it doesnt matter what other people think. They dont live with you!
Parents on the other hand and family members think they might have some influence though. Some people marry to get away from their family, or they want to join another family. Thats understandable, as is being single because you are happy with your own family or company and dont feel the need to join another!
Why all the negative judgement anyway. I think most people just ask out of concern, not necessarily they are being nosy. Even Jesus would ask where is your husband to a woman on her own. In those days it was safety in numbers.
Though I think in some areas its fairly safe to be a single woman on her own which is a blessing, but it doesnt mean you dont have any friends!