Why do you need a truck for that? What's wrong with trailers? Even my 2-door coupe can tow a 1800 kg trailer with brakes (750 kg for trailers without brakes).

I used that, once, during the early stages of the pandemic to avoid going into the store.

They showed up outside of the expected delivery window, left a stack of drywall in my front yard in the rain, and didn't ring the bell or notify me in any way. I found it several hours later.

While I understand they were likely overworked due to Covid in this instance, this kind of thing happens often enough I can only use it when I have space to securely store materials delivered several days before I need them.

To their credit, Home Depot did refund me; but I still had no dry wall when I needed it.

Also, you can't get immediate delivery when you're in the middle of a project and mess up a cut on your last sheet of plywood. There's no ctrl+z with a saw.

This is a thing, but there are a million edge cases that you can’t rely on this for. Sometimes you underestimate the amount of material you need, sometimes you need to make sure that the sheets of drywall you’re getting aren’t damaged, sometimes you need to pick individual pieces of lumber from the pile because there is a ton of variation in the grain etc etc

If you’re doing a project you very much need to be able to run to Home Depot that same day and pick up additional bulky items.

Not the same. Deliveries are often late, incorrect, or don't show up at all. It can wreck an entire day of work. Read that page...you have to pay extra to get even a 4-hour delivery window. This is great if you want to sit around with your thumb up your ass instead of building. "Just deliver the day before." Oh yeah, I'll take every Friday off of work to wait around to receive a delivery that I could have picked up in an hour with a capable vehicle.

More expensive than owning a truck.