I also don't use the single drive in stall when it is available, for the same reason: cars with trailers or bike racks might need it. Not that I've ever seen either at Supercharger stations thus far (my Supercharging count is up to 132, so I've Supercharged a lot, albeit mostly on remote less-traveled routes).A modest proposal:
Newer superchargers tend to have a "drive in" stall. For those cars with a bike rack there is a simple way to charge: drive in. Backing in, I would think, is more difficult if not impossible. I never use the " drive in " unless it is the last stall. Since I don't have a rack, am I making a problem that doesn't exist? Is this another courtesy to extend to other Tesla drivers? Or, again, do I have too much time on my hands?