Short answer -- he gets to keep making them because they make money.

But I actually would recommend 2 of his films: Jackie Brown, which is the only time he's adapted material instead of assembling purees of material; and Inglourious Basterds, which for a variety of reasons ended up rather profound. Though for Basterds, which is divided by title cards into 5 sections, I would seriously recommend skipping section 2 entirely. It's a better movie that way.