All of the square body GM trucks I have owned have had dual tanks so I got used to being an ambidextrous re-fueler a long time ago and it doesn't bother me either way. The only car I ever owned that was strictly passenger side was my TDI Jetta. My Impala fuels in the center as other classic car drivers have noted, so that one doesn't matter which way I pull in. My Tacoma is driver's side. Costco, where I fill up 99% of the time, is the only place where I can fuel the Tacoma with the pump on the passenger side due to the noted extra long hoses.Any issues/preferences?
TL;DR - no preference.