Just because they & you suck buddy !
I've always been a solid guy and have never had issues on the track or street, if you don't mind lashing valves a few times per season on the street, racing every time.
You can't tell me that hydro's are just as good at constant 6,000 + RPM's VS solids.
Since you're a hydro only guy, that's fine as well, so what ever turns your crank, ....you cranky old man and go back to bed.
Hydro's have come a long way, and like Martha Stewart says, "and that's a good thing".