This is something I have never understood. I downloaded over 500 free vst plugins years ago but I barely used like 5% of them so I just started to get rid of those that I have never used on a project and I was left with plugins from 40 different makers (Aixacoustic, Anwida, Aradaz, Bootsy, Brainworx, BTE, Buzzroom, Camel Audio, Christian Budde, ePhonic, Flux, Fretted Synth Audio, George Yohng, GVST, Habib, Jeroen Breebaart, Kjaerhus, Lepou, MDA, Mr Mono, Ndzeit Audio, Nick Crow, Roger Nicholson Digital, SimulAnalog Guitar Suite, SIR Reverb, Slim Slow Slider, Solid State Logic, Studio Devil, Tin Brooke Tales, Togu Audio Line, Voxengo, You Wa Shock and some synths). If you don't have any use for majority of the impulses/plugins, why not just delete them especially if they just sound like sheeeeeet? You can keep the installers/zips in your backup drive if you think you might need them some day, but I think that is just keeping the virtual peen long.