Btw, I find PTSmorrow's advice too unhuman, unrealistic and for some reason a bit offensive too.
It was like saying "it's ok if you're not having relationships during your life years , you will find a woman easily at 80, if you live that enough. It's ok if you missed out all these years and didn't had and experienced what 98% experienced and had ".
First, it's too non-human, relationship is a fundamental adult component.
As much how we 'aspies' are seen as robots, we also have our emotional and sexual needs, by not having relationships like most people do, we would be (at least most of us) struggling with the lack of those needs on a daily basis, and most of us are living in a world of couples, so we are always being reminded by what's lacking in our life, people would also literally keep reminding me and bug us about our chronic single state. Those simply can't be just switched to 'off'.
And time can't be compensated, there's no time machine to re-try, what passed is passed, what has been lost is lost, a one who never had a gf as a teen, would keep wondering how it would feel like back then , a one who never experienced love, sex, and etc during 20s, would keep wondering how it would be like back then ......
So saying something like "..ok...live the happiest...wait till 80" , is not too feasible or even human, it's also offensive here.
So to the OP, theoretically yes...it's never "too late" , but the more time passes the more is too late for a lot of things.