"Better" in this context connotes a sacrifice that others were not willing to make. It is not a sacrifice to go to college. I made that choice too and live with the benefits and consequences.
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What I am saying is that those who choose to serve are better than those that don't, myself included.
Should we define "willing" and "sacrifice" in this context?
There has been a whole lot of changes from 1940 through today. I know a lot of people didn't choose to go into the service in WWII, but served when drafted; they never would have volunteered had they had their druthers. I also know a lot of people who chose to enlist recently (say, last 15 years) but were and are **** bags in spite of their service.
I have several cousins who joined the Navy, not because they felt some great Patriotism; but rather because it was a good career. Good benefits, retirement, and an opportunity to get out and away from some pretty wacky parents. But they sure didn't join because of any felt allegiance to the Republic. They're good kids, and I say good for them for bettering themselves.
So say some is better simply because of their service is only half of the story. It takes their doing it for the right reasons, an embracing of that opportunity, and a readiness and passion to serve their country for me to say they are "better."
I think you alluded to that in your comments, but I still feel the need to elaborate.