As in title, I'm a bit concerned this thing doesn't have a turn off button.

It's not like tablets (even my own Shield tablet) that actually do turn off cold (even cold in sleep mode) so why is my ShieldTV always warm? Because it's plugged in electricity? This surely can't be good for the long term?

Since there is no other way to wake it from sleep mode than keeping it plugged in (I turn all my stuff on/off trough Shield remote CEC), and I wouldn't even mind waiting for the boot time, but there just doesn't seem to be a way to do it without pulling the cable in & out, is there?

It's really a strange why they did this I don't quite understand.. Why not just give us a power off and power on for the remote.