In on the right and out on the right, right?

This may seem trivial to many but I can’t stand it when someone goes in on the left door or out on the left door when someone is going the other way.  For example if you are walking out of the bank and as you go to grab the door someone else is coming in that door and you have to stand there and wait…  What ever happened to going in on the right and out on the right?  It seriously annoys the crap out of me.  Maybe it’s just me but why can’t we all simply go in on the right and out on the right?