Why no grappling?
That was a half joke.
The grappling mechanics in 3.x are ridiculously over detailed. It's probably the worst part of the combat system. Initiating a grapple can grind combat to halt, requiring lots of rules-checking and dozens of modifiers and decisions.
Generally speaking, it's easiest for everyone to just agree not to grapple unless there's a really good reason (e.g. plot/drama/whatever). Grappling with really big things, like being snatched by humongous claws, can use some ad hoc rulings to get through things quicker.
There are a few feats, PrCs, etc, built around grappling. It's better to just ignore them.