I worked for a lady who didn't marry or have kids.
I don't think it would have been compatible with her chosen career when she started studying for it ..... but I don't think she wanted to marry or have kids anyway.
She loved her job, she did lots of volunteer etc stuff related to her job, she attended lots of civic trust stuff semi related to her job, she loved art, she went to gallery stuff, she went to music stuff, she was an active member of her Church, she always had dogs, she visited family and they visited her (all the generations), she went to horse racing events, she went on holidays - including scuba diving in her 70s in Egypt, she had a little sail boat and sailed that, and also crewed for people on yachts for breaks/holidays in the Med ...... She had a very full, very active life and a lot of people had admiration and affection for her.
I was told she had an admirer, in a related profession who sent her valentine's cards every year, I don't think she wasn't interested in anything romantic or relationship wise.
She never gave a @#*+ about people judging her, what they thought of her, it just wouldn't have occurred to her to care or pay it attention. She did her thing and lived her life the way she wanted to (sadly she passes away recently in her 80s).
If people want to be narrow minded and intolerant of anyone not fitting some mould ....that would be a reflection of their limitations.