Sorry gpflepsen if you took that as being nasty, not intended that way. No one said the purpose of grounding is to protect your equipment, it's not. The ground wire would have to be of a massive size to actually protect electronics, and it's just not possible. You stated that a gorund doesn't protect squat, and it does.
Using a grounding block on the coax will help in shunting a strike to the ground rod and preventing the lightning from possibly causing a fire inside the home. It will not prevent lightning from frying the gear, that's not its purpose.
The debate over whether installing a ground increases the potential for a strike has a long and storied history. I don't think we are going to create the definitive discussion here, I know I am not that qualified. Having exposed metal attached to the exterior of your house invites lighting no matter what IMHO, so why not provide that energy a path to ground and keep as much out of the house as possible? It's not that difficult to install a ground in most cases, so why not take that simple precaution?
But I do know for a fact that if you do not properly attach an incoming conductor to the grounding grid of the facility at the exterior entry point you run the risk of enough energy entering the facility to start a fire. I've seen it happen at work, among other lightning events I've witnessed.
jrv331, we started a discussion of surge suppresion and other power related issues in this thread:
Surge Suppression and Power Conditioning
I am ordering 6 DLPS-SAT1's for the coax that enters my house, let you guys know when they are installed and how well they pass signal.