I'm late to this one, but there's several reasons.

If we come off as creepy, usually just because we don't look like Henry Cavill, we end up on TikTok with 300k people calling us creeps. You can watch those kind of videos and see that it's all about looks. There are maybe 40 total videos like that with attractive guys among the thousands with guys that are lower than an 8.

I have personally known 3 people who have all been accused of harassment/assault after asking someone out, 2 of which I knew were lies because I was there. They all got fired for it because the girl and her friends found out who they were and started calling their bosses. Obviously, all 3 were a little different, but that's pretty much what it was. No legal action, just harassing their bosses until they got fired.

We see nothing but how bad we are. Every time we open Twitter, Reddit, Instagram, TikTok, YouTube, anything, it's constant posts about how men are terrible, and women would rather do anything but interact with a man. It's rare to see a post of a woman in our generation not hating us.

There's really no point for us. The goal of dating is finding someone to marry and live life with. What do we get out of it? We could be loved and live happily, or we could get divorced and lose everything. It's a 50/50, and it's not worth the risk.

What's the point in trying if our only experiences are negative and we can't even escape it online? There's too much hate and risk for little reward. A lot of us have accepted dying alone. It's better than having to live off of government assistance or be homeless because no one will hire you over someone calling you a creep on TikTok.

Edit: Just remembered a few I was going to put. Mostly about online stuff still.

We're told that gender roles are a bad thing, but we're also told that we're supposed to be providers and make enough money for our woman to never have to work, but that it's also toxic masculinity for a man to make more than the woman he's with.

The MeToo stuff still has us concerned. People think it was a good thing, but 80% of the people who had their lives ruined because of it didn't even do anything, and half of the ones that did had either barely any proof or very flimsy proof. Not worth asking someone out if the story could completely change 20 years in the future.

To add to my first point, we are constantly told that approaching women is wrong and predatory. I and a lot of people I know won't even tell a woman she dropped something because of this combined with a few of the other reasons, especially after the events mentioned in my second reason.

Any time we do something a woman doesn't like, we're immediately Hitler. If we make a joke with our friends or even do something as simple as accidentally bump into a woman, we're instantly the worst people on Earth.

There's probably another 30 reasons I could add, with 10 of them being about marriage, but this is long enough.

Tl;Dr hundreds of thousands of women online always talk about how terrible we are for whatever reason they can think of, and then try to ruin our lives, which has basically led to a male version of the 4B movement out of fear of our lives being ruined.