First off, I'll answer your question, since I never really did. I'd be proud of my child for having the courage to commit their life to this country. I'd be proud of my child for being a cop, a firefighter or a teacher. That takes courage as well.
I also want to say that as a parent, you can always get the phone call that your child is dead. It isn't just military families who go through that.
Now, let me tell you something Fishy. My husband doesn't just go 'fight in meaningless wars.' In the past 13 years, he has worked long hours in the field with nuclear weapons. He's been chosen to fly aircraft worth millions of dollars. He goes faster than the speed of sound on a regular basis. He's trained American pilots, as well as pilots from Taiwan and Egypt. I for one, think its a pretty good idea to have as many countries 'with us' at this time as we can get. Especially in certain areas of Asia and the Middle East. Feel free to disagree with me on that, but I'm pretty sure the whole of the USA is better off having some wonderful men and women working Public Relations with other countries. He's given up months and months with his family including his two young children in order to serve the US and provide YOU with the freedom to say what you want, to whoever you want.
If all of this still strikes you as meaningless, I suggest you re-evaluate what brings meaning to your life. My freedom is pretty damn meaningful to me.