Outdated "manners" you'd like to see go away
#1 I agree with. Anyone know what the original thinking around it was?
#2 Disagree. I hold doors open for everyone (I am a woman). I mean if you're still like 30 yards away from the door, I'm letting it swing shut but if you're right behind me or generally pretty close; hands full or not, I'll hold the door open for you.
#3 Disagree. I think a pleasant and thoughtful transaction - no matter how insignificant is worth the small effort as long as the person on the other end is not being a jerk.
#4 I agree with. Many people with one position get hired in at a certain rate and get standard cost of living raise and bonuses. Someone else can get hired in a few years later for the same position at a much higher rate. Then you have a brand new person making more than the person who has been there longer and unless you really advocate for yourself, your company most likely isn't going to gift you with a market equity adjustment.
That being said, I do not go around discussing my salary with colleagues as it is still considered taboo. I do know what everyone on my team makes though (even my boss) because I manage the departmental finances. I can't even share that info with my boss because everyone on the list are his peers except for me as he is the only one with a direct report.
I also don't have any issues discussing what I make with my friends and I have several friends who share as well - it's not a big deal. I make 6 figures but I am not "wealthy" and for the most part there is not a significant wealth gap between most of my good friends and myself (i.e. nobody is significantly more rich than the other). However I do have a handful of friends who don't make very much (inherent with the line of work they are in) and I don't really bring up my salary with them because I can tell that it's more uncomfortable for them to talk about - which is understandable.
I think without me telling my friends how much I make, with some simple math and a glass door salary search, they could get a pretty close idea of range anyway.