Mine don't fill a need either. I limit my silly justifications for guns to myself, and the 4 other personalities that reside in my mind. If I try to use them on the wife, she goes shoe shopping and comes home with some what would sound like extremely bizarre reasons for buying shoes........simply to point out just how ridiculous I sound if I try to justify a new gun purchase to her.
The problem I have found with inexpensive chronographs is they suck. I borrow the chrono I use when I actually need data on something and I can't find "published" data on a particular bullet/powder combo. I've used a number of different makes and models over the years, and have found the price usually reflects performance. The one I borrow is an upper end Oehler, and while not top of the line, it ain't cheap either. But it provides consistent data, appropriate to the tests being conducted. Had a "Shooting Chrony" clock my .300 WinMag 190's at 1430 fps. Next shot was less than 1000 fps. Third shot was over 3k. It was set up properly, conditions were conducive to chronographing rounds. The cheap gear just turns in cheap resutls.
I have about the same factory BLK brass, but I'm not happy unless I have at least 2 ammo cans full of a particular caliber. So I chopped up about 1500 pieces of 556. Net result will be about 1k....(see above post about my learning disability).
I mean, what is the point of being an ammo hoarder, if I hoard selectively? I just want to be lumped into a larger demographic that makes it easier for those who disagree with my lifestyle to mock my existence. I find I can accomplish that with at least 1-2k rounds of ammunition for a breachloading rifle that will probably never see 500 rounds during it's service life.