It's an issue of self control, once I start picking, I will keep it all. But as I said, I will top off all my little kits and keep them, so I will still have a ton of lures to work through, but when it comes time to refill, I will be far far more selective. For example, this is my "6-8 inch t-rigged worms" kit;
There are like 10 different brands/styles of worms in there. Is a Rage Recon that different from a Culprit? Is a Producto Tournament really that different from a Mann's Jelly? Sure, there are difference, but right now I don't have the experience or knowledge to know when to use one or the other. I have maybe 11-14 other kits like this, for different plastics. The plan (as I am currently thinking) is to fish each kit and actually keep track of what is catching and what isnt. Then, when I go to restock (and condense it down to like 6-7 kits), I will only buy what has worked for me.
Donating it isn't a bad idea, I travel for work a ton and if I control my eating and drinking, my left over per diem money goes right into the tackle fund. I have already donated some rods and tackle to a local fishing charity, it might even be more of a sure thing to just throw it in the mail rather then try to sort and photo it all, that gives me less time to change my mind.
Even if I want to target numbers, the diminishing returns on dozens of presentations has to kick in rather quickly. The Ned rig, a Robo on a Slider, and a Bubbling Shaker on a worm hook has accounted for most of my great numbers days, why am I keeping all this other stuff around?
A lot of this comes from fishing out of a kayak or on foot. In both cases I can only carry a very limited amount of tackle, so it's not like I will ever have even a fraction of my collection on hand to react to new or changing conditions.