False, we are giving you something: a pledge to defense is a benefit and how beneficial it is directly correlates to:
A) How reliable it is
B) How effective it is
The most powerful nation in the history of our world pledging to protect you, as it turns out, has a nice potential for deterrence from hostility. Our defense is like a massive insurance policy. It guarantees you insane levels of security in the (extreme admittedly) case of war, where we will bear the majority of the burden of spending and manpower. In exchange, we ask that you pay a reasonable amount so that in such a case you ease our burden somewhat. If you don't want the policy, don't sign up rofl. How does this level of common sense escape people? Don't freeload, meet a reasonable burden so that if anything ever happens others aren't carrying your weight completely, and everything is fine.