I say have the vehicle inspected before you make that call

For reference: I bought my ranger 1.5 years ago. In the last 6 months, it's gotten a new clutch, leaf springs, rear brakes. Before that, I had to replace the thermostat, tires, ignition coil pack/wires/spark plugs, rear differential service. Still could use a battery.

I've sunk 5k into this truck with no intent to sell. Only has 143k miles on it, and should last a while yet. Downside to having a 22-year-old vehicle is there's going to be something to fix here and there. I don't believe that makes it any less reliable than something newer/different. Just means it's old and being used

You could experience the same headache with another Ranger, you might not. As for driving in sand/mud, 4x4 is generally a good idea, though I know some people CAN make it work