Those of us with larger rigs find it inconvenient to un-hook and pull to the dump station and then put up with some people who take 30 to 45 minutes there to dump their tanks and then come back to the same site to set up all over again. If we are only staying somewhere a short time, 3 days or less, I will forgo the sewer hook up and wait until the next place with a full hook-up to dump at my leisure. Some people like to rough it, some people like glamping, I prefer having a level of comfort when I travel and that involves full hook-up. To each his own.