I drive an IDI out of luck and budget. I needed a truck for my move from Cali to Vegas. Did some math, and it needed to be a 3/4 ton or better. It was a 700+ mile drive, so I wanted a diesel. It had to be a ford, because well... I have done things to fords... and the oval has never let me down. Ever.
A few weeks of looking, and some guy is selling off a one owner 87 ex cab long bed. It's rough, and dirty, but only $650. It was a farm truck for 24 years. But it ran, and ran well. Then, well then, I did things to it too. Including lighting it on FIRE. But you know what? She's still in my driveway, lights off on three cranks, and just hauled home a 5k trailer. What I've done to this truck, would have killed a normal one.
If it weren't an IDI, I would likely be driving a FE powered 3/4 ton. I do miss my 83 Ranger tho, that truck was nothing short of amazing.