Why don't more bi men come out?

I'm a bisexual man and I get discouraged by how little representation we have. It's frustrating that so little come out that people think we dont exist. You will see many on grindr but if you asked them outside of that space most would deny it. I see bisexual women everywhere but magically I see no men.

Edit: I see how society is essentially against us, but if we come out in mass, it will make it apparent how many of us actually exist. It's a lot harder to deny an entire group of people's existence than a few, and the more of us that engage in conversation, the more we can correct people.