You should NEVER stop blinking before the turning maneuver is finished.
We're talking about two different things here. Lane change indication usually runs for 3 blinks. That's standard on most all vehicles. Turn signal stays on until the wheel resets it when returning to origin.
As a driver, your primary responsibility is focus on the things in front of you. If you can't do that, you shouldn't be behind the wheel. Likewise, if you can't see signals other cars are making, you probably shouldn't be behind the wheel.
Well of course. You should know what's behind you, so you are not cutting anyone off. That doesn't mean you are accountable for whatever is going on behind you. Generally, don't be a dick, and make sure there's room. That's common sense.
You can disagree with it, but the DOT states that you need to maintain a minimum distance between you and the vehicle in front of you, in respect to reaction time.
As a motorist, you fulfill this duty by indicating your intent with your turn signal. As long as there is clearance and safe distance, any remaining responsibility is on the individual who is supposed to be paying attention to what is in front of them based on DOT standards.
It's pretty clear cut.
This is of course no excuse for poor driving, cutting off, or unsafe lane changes. But if you are following the rules of the road, using your signal, and maintaining safe distance, there isn't much you can do about the distracted person behind you. And that's not your problem.
Same. This runs for 3 seconds and blinks 3 times. If the car behind you is not paying attention to you for longer than that, that's their problem. Your first priority when driving is looking where you are going before anything else.
My best friend of 25+ years has always worn his socks inside out. He has always preferred the smooth finished side to the unfinished/textured "inside" of normal socks.
It has never been a problem nor will it. It's just preference. Go for it, it's not going to change a single thing other than how your socks feel.
How are you getting your cat to wear headphones?