The best way to defeat your enemy is not by destroying them, but by making them irrelevant.
No offense intended Alex, but we don't have the means of doing so. We're the ones up on the chopping block, being made irrelevant through total economic, social and political disenfranchisement if we don't go along with what they say to, and only work within the lines of what they find socially acceptable.
They're perfectly willing to destroy us, and it's working for them. Why then would we not return fire?