Bob, following your logic, the entire after market/performance auto parts industry is pointless. If you'd take the time to visit SEMA, I bet you'd find several thousand vendors and attendees with a different opinion. I spend plenty of my money on ammo and range time. That's how I know the aftermarket parts in my CZ work as promised. Just poking fun here, to each his own. I'm new to this hobby as well but everyone enters at a slightly different place on the curve. Tinkering isn't for everyone. However, I'm pretty good at it and would go insane without it.