I wouldn't be nearly as precise or accurate a shot as I am now (which really isn't very) if I didn't do half the dry fire practice that I've done so far. General dry practice has also gotten me to the point where I can intuitively handle my guns administratively to the point where I could be told to do it blind-folded. Sure, if you're practicing wrong, then you're going to get incorrect results. However, if you're practicing it correctly, and you can get a bunch of dry/dry fire practice in, you're going to be that much further ahead of the curve.
It'd be nice if I got paid to shoot guns for a living, but I don't. Given that I have a finite amount of funds that I can invest into ammo as well as other things that are important in my day to day life, I'll continue to do correct dry/dry-fire practice when time permits.