In addition to the security aspect, it helped me understand a few times why I could not ssh into a server by IP. I was in a secure environment, the question fo

In addition to the security aspect, it helped me understand a few times why I could not ssh into a server by IP. I was in a secure environment, the question for the key appeared, I accepted the new key I sometimes erase known_hosts, change keys etc. so it was not suspicious). And could not log in. It took me some time to realize that the IP I was trying to connect is not mine (as in "at home") but on the company network. I realized that when I recalled that I had the key prompt.