Why do people want 4x4 trucks?

^title.
I don't understand why people want 4x4 instead of 2wd trucks.
Half of my friends have 2wd trucks and the other half have 4x4.
I have a 2004 Arizona Beige Ford Ranger w/sidestep 2wd truck and I don't need the 4x4. I gone muddin just fine in a 2wd, not successful in 4x4 (my friends let me try theirs).

Should I pay off my truck?

I'm 18 and just bought a steal of a deal truck for $8200

I'm talking 2005 Ford Ranger with 28,745 miles on it!

I shelled out $5700 and have $2500 left with $182 interest fee.

I make about a $1000 a week. Being as i had to consign with my Dad for interest I have the money to pay my truck off quickly.

Should I or should I wait for my 18 month term to end?