Fighting wars on behalf of others

There's a constant debate in America over whether we should be fighting wars for other nations. We've done it in Korea, Vietnam, Kuwait, Iraq, Afghanistan, Libya, and others. I've often jumped on the bandwagon that we should not be getting involved in the business of these countries.

Yet my inner history buff reminded myself the other day that the only reason our country exists is the French were kind enough to help us fight our common enemy, the British.

So was France's foreign involvement justified? And if it was, does that justify our current foreign involvement? France certainly didn't have the resources to be fighting the war, just as America hardly has the financing for the wars we're fighting.

Should we be asking ourselves if maybe our present-day involvement in foreign wars isn't quite as wrong as we've thought it was? Or should our history books be frowning on the French for making such a foolish move and helping the poor American rebels?