So, when Jon buys a Trideo from Kongmart. Its Just On....
While hes packing through to his car its just on...
While driving home, trideo playing in the back seat... cause its just on...
Lugging up the stairs.... its just on....
Oh I see!!!
In 2080 we have thrown 200 years of SAFETY and circuit design out the window (yes, circuirts predate electricity!)
Not to mention 130 years of electrical SAFETY and design along with it!!!
There are some very REAL reasons why shit have an off button....
Lets start small. Your blender.....
Without that off button, what is going to stop those spinning blades when Timmy puts his fingers in the bowl?

Now, a little bigger..... it sure would be nice if you could stop the EM interferrance from yoyr cellohone, so you know, YOUR PACE MAKER CAN FUNCTION!! But really, a bearing heart is sooo over rated...
And geee.... if only we had a way to stop those FISSION fuel rods from exiting the chamber.... guess we just critical....
And those are just the smart ass ones off the top of my head....
Servicing.
Repairs,
Upgrades.
All good reasons to have a PHYSICAL way of disconnect, so you don't end up taking 3 amps across the heart.... (16 times the lethal limit, yet can come ftom a WATCH BATTERY in critical fault.... which happens more then you realize...)