I use it, it's handy for a few things, biggest to me is finding an alternate powder and how it might perform in comparison to one you're currently using and might not be able to get. One other thing that's real nice is once you have your load info tuned in it for the greatest degree of accuracy there's some nice things to do with Barrel time that can be effective for selecting a load combination.

Lastly, if you're looking at a different cartridge or barrel length or something along those lines it can help you decide what components you should be looking for or how it might perform.