Are slideout lock bars important?

The m/h has so many safety switches (slides won't work with key on, TV turns off with ignition key on, etc.) I wonder why they didn't put switches in the hole in the wall that the lock bars go in to open the circuit?

I'm going to put a piece of tape on each slide operating switch to remind me of the locks. I always believed, though that it's better to design against problems than to have to use check lists to avoid them.

Thanks, everyone for your input.