Drive it and enjoy it. If you sold it, because of its low mileage and probable condition, you might get twice what a similar Ranger with high mileage and usual ware, but...
then what would you do? Go out and buy something else, of course.
At least you know where this one has been, and it's history.
If it's in really super condition then take it to cruise-ins and shows. You'd be surprised at how many people appreciate an older truck that still looks really good.
When I run my low mileage Ranger to a cruise-in or local show, I always get 1-3 requests to sell it because of it's condition. Like OldMan2, I keep it up and maintained, and drive it and enjoy it.
Grumpaw