For those of us that struggle with the intricacies of creating sounds from scratch, presets and loops as a starting point are invaluable. One of the values of a convolution reverb is the ability to load an impulse that otherwise might take you (read me), many minutes, or longer to create. I rarely, if ever, use loops but I have no problem with having to download and install hundreds of MB's of them so others can use them in Sonar.