It's probably good to harness this resource if it's economically and ecologically feasible to do so, if for no other reason than diversification/risk management. I'm skeptical that NG is the solution to anyone's quest for complete energy independence though. One obvious reason is that it will eventually run out.
How much additional transportation/infrastructure expense would be required to put NG at every gas station? How much more will NG cars really cost (it looks like that Civic is ~ 40% more than a standard Civic)? How much will NG prices increase due to increased demand?