I'm one of those people who uses a paper towel to open public bathroom doors. I get upset when:
1. There's no trash can by the door for my auxiliary paper towel
2. The door isn't push on the inside (can't kick with my foot).
For the reason you mention. I'm sure it's mostly just conditioning. It's a harmless preference and it probably saved me a few colds (although, perhaps getting a virus would have helped me in the long term...).
Sometimes there is a trash can by the door but it has a lid (with a handle). Even if the door needs to be pulled from the inside you simply grab the door handle with a piece of paper and open the door, and then throw the paper in the trash can.
1. There's no trash can by the door for my auxiliary paper towel
2. The door isn't push on the inside (can't kick with my foot).
For the reason you mention. I'm sure it's mostly just conditioning. It's a harmless preference and it probably saved me a few colds (although, perhaps getting a virus would have helped me in the long term...).