Actually, this is kind of a funny topic for me, because I AM in the habit of holding doors open for people just behind me or even allowing them to go through first, if they're close enough to do so unawkwardly.
What DOES get awkward is, sometimes I'm not sure when it's a man--especially an older man--if it's more polite for me to lag a few seconds to see if he initiates opening the door first (as used to be the custom). Some men, older especially, still expect this--in which case, the polite thing for a FEMALE to do would be to give him time to reach and open the door first.
Does anyone have any feedback on this? (Or should this really be a new thread?)