For me the truck is like a sawzall. I don't need it all the time but it sure comes in handy when I do.
Wedge
I think this logic applies to most peoples situation. I will throw my experiences in the ring as well. I come off a family farm, I am a desk jockey now, but aside from my "day job" I manage a few rental properties as well as have hobbies that require a pickup. I have never been without a pickup but was for a short period of time was without a full sized 4x4 pickup. Durring that time period I only had a 2wd Chevy S-10 (with a pushrod tech 4) It did most of what I needed for basica hauling, but could not do much of any mountain driving. I have 2 pickups now, which I might admit it is overkill for my situation, but the one was just too good of a deal to pass up.
1997 Dodge 1/2 ton (360) The "trip" pickup. This was the one that was just too good of a deal to pass up when I saw it for sale, I didn't really NEED it at the time. I bought it with 80K on it and it is used almost strickley for long trips (when I need a pickup on the trip), mountain driving, pulling my motorcycles on or off road, 'light duty" trailer towing (trailers like a car trailer). It almost never sees any in town or short trip driving. I have mildly modified it for some functionality and slight performance but it is mostly stock. I have had this for 2years. This pickup is more comfortable on the road than my Ford (see below)
The originonal workhorse 1989 Ford 1/2 (302) I have had this pickup for nearly 15 years, it is now relegated as the "beater" only I realy don't "beat" on it, but it is now for short trips, hauling supplies, tools, light towing, genreral "pickup" duties. Early in its life I modified it for better trail performance to get me into the remote areas with my motorcycles and camping as well as long trips when I was racing more. This pickup has been across the US toting my race bikes around. Modifications include 4 inch lift, add a leaf in the rear, improved radius arms for the TTB in the front, Loc-rite automatic locker in the rear, homemade rock slider/nerf bars/steps that mount to the frame, reciever style rear mounted motorcycle carrier, on board air tank/compressor, improved transfer case, rear disc brake conversion, deep trans pan, trans cooler, oil cooler, 5 core radiator, headers, free flowing exhaust, 120 amp alternator. The pickup has close to 200,000 miles (bought it with under 100K)
So I guess I split hairs on how and what purpose I use my pickups in an attempt to match the vehicle to the job at hand. I have two cars as well, a commuter/erand and a "trip" car. Honestly if you don't know if you NEED a pickup get a full sized 2wd and it will be there for you when you need it.