Just picked up a well used class c lazy daze. last owner had it sitting in a storage yard for several years, so it's got a few issues. I've had a travel trailer for several years, so I know the basics...
maybe it's a form of laziness. all my other cars you just push a button and it locks all the doors, or unlocks them as you walk up instead of walking around the vehicle. manual keys are still intact, plus it connects with the alarm system. one button and you know you are secure.