I too am single, never got married, never had kids. I am now retired and living alone at the age of 51 (almost 52). I have lived most of my life alone. I did date quite a bit over the years, and had plenty of chances to commit, but I didn't for whatever reason.
I noticed in my teen years that the world was taking a turn for the worse with immorality and hookup culture. Now it's all you find, and people are untrustworthy, dishonest and selfish. Finding someone who will treat you right is hard enough, let alone someone with Christian values who will be loyal and true.
I used to wonder whether I missed "the one"; that maybe I should have married someone along the way, that maybe I was too picky. I let it go, because if I allowed myself to think that I would be in misery, looking to the past and not the future. I don't think about it now. I figure if God wants me to be with a person I will be with them and not alone. I trust in God's will being done in my life.
I would keep praying and have faith. If there is someone out there for you, God will make it happen. It's usually when you're not looking that love hits you from out of the blue. You just never know.