I used to take a boat load of stuff with me camping with my jeep. I never even touched most of it other than loading or unloading it. Then I started camping with my motorcycle and I had to pare down due to the obvious lack of room. I realized I still have everything I "need" and packing, set up and tear down is much quicker. I've also bit the bullet and purchased better quality gear because it often packs smaller / lighter, and a side benefit is is usually sets up and breaks down faster too, not to mention works very well vs the cheap stuff that leaks / rips / sweats / etc.
Moral of the story, figure out the bare minimum of what you need and only take it. It'll make camping more fun anyway.