I understand your statement and it has merit. However, I note the draft has not been active since the 70s. Those men all volunteered to serve their country. They believed in what they were doing, and so did I.
Yes, some volunteered to get out of poverty, bad circumstances, etc., but that doesn't mean it was the only route out. They chose to be there.
My uncle was in a bad situation, married early and had no money or degree. He joined the army and served in Desert Storm. He chose to be there. I was proud of him.
I didn't join because at the time I graduated high school (2005), they weren't taking people who took Adderall for ADHD ("daily psycoactive drug" or some such nonsense). It disqualified me from military service. That's what the recruiter told me anyway. But I would have been proud to serve.
I believe we did good in Afghanistan, fool's errand though it was. I believe a lot of lives were touched good. An entire generation of girls who would otherwise not have an education, for one. I was devastated when things didn't work out.
For this reason, I get annoyed when people say "we sent our kids to die".