Currently, towing a travel trailer and hauling filthy camping shit and mountain bikes. So nice to toss wet stanky shit in the bed instead of in the cab. I need the tow capacity either way, so may as well have a useful bed (vs an enclosed SUV).

Previous truck was to haul a race car on a trailer. Same fringe benefits for the camping shit, plus tools and spare parts for the race car (engines sometimes, wheels/tires, etc).