I want to give an honest answer here. I am in a relationship of 10 years and there are a couple points worth making upfront. Sex doesn't make a relationship - not everyone feels this way but you can have a loving relationship without it. Children are not something I've ever personally wanted so I can't attest to that. That being said, being in a relationship is overall good for me. It has made me do things and go places that my introverted self would have never done or gone to in the first place.

More importantly than any of that, don't give up hope that you'll find someone. It may not be tomorrow, it may not be this year, but if you keep believing that you'll be alone indefinitely then you might just manifest it. I can't exactly give tips on how to meet people - being an introvert and out of the dating pool for so long means any direct experience is not very relevant, but I can say try to meet new people and see who you jive with. I think relationships are probably easiest to foster through shared experiences and meaningful connections, so if you can find a group of people that share a common hobby/passion, that might be a good place to start.