Yes, unfortunately when people find themselves on a night time server, they often disconnect. However, for the people who stay, it's almost an advantage. When I find myself on a night time server, its much easier to scavenge the larger cities due to lack of players and its easier to avoid both players and zombies. Night time servers are often less populated, but saying night time serves no purpose is ridiculous. Night time servers still usually have a reasonable amount (20-30) and sometimes more. And you spawn with a goddam flashlight its not that hard to see.