If you ever had a 5 speed you would never go back to less but i quess if all your driving is from one stop light to another your right it's not needed.I have a 71 Demon with a 5 speed and a 74 Scamp /6 with a 3 speed overdrive tranny and love them both of course I drive my cars other than stop light to stop light.
I've owned several 5-speeds, and currently own a Shelby with a 5-speed. If you drive your cars in overdrive everywhere, then I guess a 5-speed is right up your alley.