Moab on bikes was amazing. Sure, I missed having a cup-holder, and a big comfy seat, and snacks within reach at all times (like in a 4x4 rig). But everything else made up for it. You can really make time on bikes and see so much more. About the 3rd day of riding, your body has gotten over the soarness and pain from the first 2 days, and is ready for trail-battle!
You actually get less thrown around on the bikes than in rigs, since you're on 2 tires, can stand up, and can really pick any line... You only need like a 4" pathway! It's amazing what you can ride up. I tackled way more than I thought I'd be able to.
I hope that I am able to drag my bike along anytime I go back... It was just too dang much fun!