I feel your passion on the pallet wood. My DH and I built this triple planter with free pallet wood. I absolutely love it and want to build more but DH called a carpentry moratorium until it isn't triple digits outside....![]()

Breaking apart pallets became incredibly tiresome. Then we figured out it goes MUCH faster when you use a circular saw. Since our slats were all around 15-16" long, this measured out almost perfectly using the circular saw and simply cutting them off the pallet supports

Next step forward was using a pallet buster tool. That works great on some pallets, not so good on others. If you can't get both levers under the wood - like on the end pieces - then I was just splitting the wood as it was pried up. Lots of wasted wood using the pallet buster idea.
Now, I pretty much just use a circular saw, cut off the ends and the middle, leaving me with useable ~18 inch planks. Plenty long enough for my next pallet raised garden beds and planters builds. I have been able to harvest much more useable wood, it's a lot easier using the saw, and breaking down a pallet now takes only minutes.
If I need boards longer than 18 inches, I will take my pallet buster tool and pry up the center piece. Usually, that does not break the wood because the pallet buster can get a lever on each side of the 2X4 support. The center pieces usually pry up pretty good with a pallet buster, so at least I get some use out of it.
For anybody reading this post, if you use a circular saw, be sure to wear eye protection. I ran over a few hidden nails while using the circular saw on the pallets. I broke a few teeth off my saw blade. But, I now only use that saw and damaged blade for pallet breakdowns.
So far, all my pallet projects are for outside rough built garden type stuff. So I am not running the wood through my planner, edger, or other good saws. If I start to make projects that need processed wood, then I will invest in a handheld metal detector to scan for hidden nails. No sense in using free wood if it ends up costing you more money in damaged planner or edging blades.