Men and women are far too picky compared to the past. That's why they die alone. It's that simple.
There's nothing wrong with this if it means you're happier than being stuck in a relationship you don't want, but you can't have it both ways.
Most people reading this know exactly who they'd be with if they just said yes to their options. Not liking your options is vastly different from having no options at all. Your options can change if you make the change within as well.
What does this mean? Just lower your standards and there's a woman out there for you?
It's been a long time since I was single, but I never felt like that. I worked at a job with a bunch of other men and didn't have a lot of social outlets that involved women. My candidate pool was close to zero. I eventually recognized this and found ways to broaden my pool, but it wasn't easy.
I'm only speculating that I think the past used to be (a lot) worse. Competition was higher across the board for significantly worse options across the board. So much of the modern era is defined by the desire for social change, but nobody seems to pause and think what that must mean regarding the perception of their options.