Well what I wasn't liking was the method of altering the curves - the interface itself. I don't know how that makes me the problem.
In any case it's pretty lame to blame the user when they're having trouble with a piece of software.
The Parametric curves don't allow you to alter them to hose the image which is good, especially when you understand that you're doing fine tweaks.
There's a pencil option in Photoshop's curves that allow you to severely Posterize the image and you can of course do this using the standard point curves if you pull them too much. That's not possible in LR and as yet, I don't see why anyone would want to do this.
You can't pull individual color channels in LR.'s curves because again, this isn't the place to be doing such work.
LR's Parametric curves are for fine tweaks, end of story.
Now the question that I'd find reasonable would be, if there is point curves in ACR, why not LR? Considering that it appears the good people at Adobe are trying for parity between the two, its a reasonable question. Lose them in ACR or add them in LR, I'm OK with either.