Why vampires don't sleep?

they do at morning not at nigth

Answer

The only vampires I know of are out during the day, busy sucking the soul out of every person they can. With the exception of one I know for sure who is not like that and, maybe a few others I haven't met yet, they all work in the same field that I currently work in. They probably never need to sleep because they live on everyone else's energy and life source. Bloodsuckers. Love the work. Hate the vampires. :-)