Battery voltage not the same “downstream”

[tiger79]

Ref battery switches on my Moody, it comes down to discipline, and that comes down to sailing in pre marina days when the day's sailing started in the dinghy going to the mooring.
A routine should be followed every time one goes on board .
I have to say that I am amazed at how many things I see today from the " get on, start it and sail away " brigade these days.

Regardless, why wouldn't anyone want a simple, totally foolproof system?

[Lyra]

Regardless, why wouldn't anyone want a simple, totally foolproof system?

I can think of several Murphy's law quotes regarding this issue