1. Take a bunch of trash/old furniture/whatever to the dump
2. Move furniture
3. Pick up materials for a home renovation like 16 foot long baseboards, drywall, a few dozen boxes of laminate flooring, etc. (no need to be a professional construction contractor here)
4. Tow a camping trailer
5. Much, much more
I'm literally using my truck tonight to pick up ~500 square feet of flooring material, which is saving me ~$300 in shipping costs. The truck itself only cost me $3,700 to begin with, and between this and several other home improvement projects it has saved me ~$2,000 in shipping/moving/other costs so far in just the two years I've owned it. And I'll be saving a bundle in shipping costs on new kitchen cabinets in a few months as well. That's before you get into the convenience factor of not having to rent/borrow a truck anytime you need to move something big.