I'm a 40F and I sometimes am hard on myself and say "I'm too weird to be with someone." and old. But then I remember, it's better to be old and weird alone, than be with someone with whom you cannot be 100% yourself.
Being with someone who complements you is great, alone is better than a misfit. And solitude is best.
Not saying you can't think about dating every now and then. That's perfectly normal and common, but I'm learning, at least, to enjoy my own company a lot more. And this is necessary I feel, if you want to be truly content in life.
Edit: and if you find someone you like but feel you have to hide parts of yourself, even after months of dating, and you cannot just be relaxed in who you are, that's not a good sign. Never shrink yourself to fit someone else's ideal.