Another solid ass post from you on this thread this is how I feel. If I am with other people its up to them. Its more a psychological thing and if I have people on the chair w/me I don't do stuff like lean forward since I'll be chatting or whatever and won't ever want it down.
If I am alone its a sometimes thing probably put it down 30% of the time maybe a little less. It usually goes down if I get bored and start leaning forward and say "uhhh I'm gonna put this thing down so I can lean on it" or if the lift stops in which case it almost always goes down. And footrests is a definite if I get middle seat on a 4 pack and can spread out and use one of each the side ones. Some small ass mountains where the lift never gets high enough I so I would jump off anywhere it always stay up.
The one thing I don't like is some gay ass ski patro doosh who yells at me to put it down if its up. Got my ticket pulled once for yelling fuck you back to them (was younger when that happened I've grown up a little.)