You say that now but you're probably still young
You've still got your 30s to go, your 40s then your 50s then your 60s then your 70s. As you get older you'll start to lose more and more people. Either they'll die, move out or move away.
Can you really honestly and truly see yourself being completely alone at an old age? No one to look out for you, check up on you, remember you?
Because there's a reason why most dating sites are completely dominated by people over 45. It's like once they start hitting middle age it begins to hit them what being alone really is. They get desperate at that age, that's kinda the reason why you always hear those stories about older men and women being conned out of all their money by the catfishes they 'fell in love with'. Signed over their life savings in a desperate attempt to bring him or her over to them.
You're not the first person who thinks this and certainly not the last. Like I always say, if I have a pound for every guy and girl who swore they'd never marry only to marry at some point in their life, and for every guy and girl who claimed they'd never have kids only to end up having a family - I'd be pretty ****ing rich right now.
People change their minds all the time. Decisions are never set in stone and nothing is forever. If you can't find anyone right now it doesn't mean you are destined to be alone forever. How ridiculous, the world is full of people. You just haven't met your soulmate yet.