Yeah fo real! You the dude for at least coppin' to it! I did the same thing in the beginning, I aint gonna lie, but I would not have copped to it then, so you bigger than me dawg! Anyways, I cut it down and got rid of everything except my MPC and Fantom and Mac with a couple VST's and a Turntable! I learned those front to back and then added 1 piece at a time as needed and only if needed back into my arsenal.
See, when you start out, if you can afford it, you buy equipment because beatblock sets in or cause you think it will put you over the top and make your fire hotter, truth is it doesn't and you eventually figure it out like you have here! Props to you for that!
Now - Take your MPC 2500 and the Triton and a turntable and move on! Keep your Mac, PC and soundcard and all that but if you don't want to sell the rest, put it in storage and after you master or learn a piece throughly, bring back one piece at a time if and only if you need it!
My new rule is: If a piece does not get touched for a month (and I am spending a fair amount of time making music) than I put it on the chopping block. The chopping block is this: if it sits there for another 2 weeks without a descent amount of use and again, I was spending a descent amount of time in the studio, then its gone! Basically 6 weeks without using something means you or at least I don't need it! Now, this does not count for classic pieces, like my TR-808 or Fender Rhodes, etc... those are classics and I will never part with them!
Oh, and another thing: THERE IS NOTHING WRONG WITH BEING A SAMPLE BASED PRODUCER! NO MATTER WHO YOU ARE OR HOW MUCH GEAR YOU GOT! PERIOD! Tons of great and famous producers are sample based producers and many many more do it part of the time at least! Personally, I sample sometimes when I am having a beat block, or when I just need inspiration, but I know producers who are mucho talented that sample in almost every beat they make! Now, I say sample not looping! Not dogging looping, but taking a sample and flipping it and making it your own and adding to it is much different then taking a sample and looping it over and over without any editing and adding a boom bap drum beat! That kind of sampling is OK, but you don't need alot of talent for that! So it kinda depends on where your coming from and where your trying to get? Either way, gear can definately interfere and even halt progress and creativeness! Less is often more!
PEACE and I hope this info (however simple it is) might help you!