Rejection can be quite detrimental on the internet. More than you might think. You send off an email, or a love rocket, and get no reply. Or perhaps the answer is unclear. Because there is no definitive closure, the pain is drawn out over longer period of time. And may recur at night.
The fear of a seen danger, a wolf or bear approaching, will cause you to jump into a car and drive away. The fear of the unknown is not the same. It will eat away at your soul. This is called anxiety. I worry about us. I worry about our anxiety.