Hello OP
I’m sorry that you’re feeling the way you are. Not enjoying being single is entirely valid and I’m sure many will identify with that, but I think it’s quite alarming to think that being single is akin to a worthless existence!
I can only assume that you’re feeling quite down at the moment and are catastrophising, which is also completely fine and understandable, but your life and its value have absolutely no correlation to who you are or aren’t sleeping / cohabiting / sharing your days with. When all is said and done, the people who love and care about you will remember you for you, not who your partner is or was.
I’ve been single for almost a decade now. Mid-thirties. I am a mum though which I’m assuming you aren’t as any posts I’ve read this far don’t reference children, and so my days aren’t spent entirely alone. But I don’t have a ‘significant other’, and I can remember vividly how much that frightened me when my last long-term relationship ended many many moons ago. But I can honestly say I now see the glory in being single; doing everything when and how I want to, not being beholden to another adult for anything, and being able to take massive bloody pride in everything that I’ve achieved and own because it’s all down to me. Now, I’m really not saying that because I feel this way you ought to also, or that you might ever feel the same, but please don’t write yourself off because you don’t have a partner. I’m sure your qualities and attributes are as wonderful as they are plentiful, and if your current friendship group aren’t filling your cup then branch out to try and meet mates.
Please don’t assume that whatever is lacking in your life is because there isn’t another person in your bed though. If you don’t feel like life is enough just you, having a partner won’t miraculously cure that. And, personally, I wouldn’t want to be with someone who needed me to validate them, it’s just about the biggest ick going IMO. I’m not saying that to be unkind at all, but I don’t think you’re likely to attract a good one while both your self-worth and self-esteem are so low.
Be you, and be proud to be you. Focus on what makes you happy (outside of finding a partner) and take the pressure off coupling up.
It’s such a cliche but we really do only get one life; live it!! And take good care of yourself xxx