Here are my 2 cents worth:
1) I think halachically and just basic menshlichkeit-wise to just get out of the car and walk her. There is nothing halachically different walking her to the door as there would be walking around with her on a date and it irks me to no end that there are guys out there that would use halacha as an excuse for laziness and rudeness.
2) It makes me feel respected and valued when the guy walks me to the door. Irrespective of whether he/I want to go out again.
3) The feeling when the guy doesn’t walk me to the door is really awful. They range anywhere from, ‘I can’t believe nobody ever told him to walk a girl to the door’ to ‘wow, I guess he’s really lazy/ can’t wait to get out of here/ I’m obviously not worth his time’, O and the really awkward feeling you get when they sit in the car watching you walk in…
5) If a guy isn’t sure whether a girl feels comfortable being walked to the door, JUST ASK!!! Guys have said to me: ‘Can I walk you to the door?’ and I say ‘sure- thanks for asking!’ If a girl isn’t comfortable with it, she can say so, and the guy still gets points A) for offering and B) for showing sensitivity and asking whether she is comfortable with it.
6) I also think it allows for a certain role- appropriate behaviour which is good for fledgling relationships in dating. The guy likes to feel like the man in the relationship, and letting him walk you to the door will let him feel like your ‘protector’.
When you let a guy feel like a man, and you make a point of appreciating whatever it is he does for you on the date (holding the door/ paying for your drink/ walking you to the door) he A) feels good about himself, B) feels like a man which helps him see you in a feminine light as you are accepting whatever he is giving you. This enforces the different roles men and women play in relationships and this is one reason these type of gestures are important parts of courting.
For the guys out there that do/did walk their dates to the door- how did that make you feel? how did you perceive your date afterwards?
edited