Civvy,
Three points: Firstly, the UAV debate is a valid one and I doubt that anyone here would fail to acknowledge that they will play an ever larger part in military aviation. However, few would be so crass as to believe that there will not still be a need for an airborne decision maker in many areas.
Secondly, whilst not wishing to belittle anyone's pastime, I'm afraid that if all that you, your father and your grandfather have flown is toys, then you have zero flight experience - nothing. Please do not delude yourself that you have acquired any of the skills and airmanship required to be aircrew yourself.
Thirdly, what insanity makes you think that you have the right or the wisdom to tell us why we serve our country? It is a personal decision made in good conscience by high calibre individuals for their own reasons. At the risk of sounding like Jack Nicholson, if you have the courage and the ability to make that commitment then take a weapon and stand at post. If not take your drivel elsewhere until you have something intelligent to contribute.