It’s very simple for me. I like to take long vacations with my family far away. My socks going 1-2 weeks without cleaning would be a tank disaster I am afraid. Filter rollers I change before leaving and have no worries. I don’t want just anyone messing with my tanks and this is one less thing to worry about. I try as much automation as possible to keep things as close to normal as I can while I am gone. It’s about stability for me.