I am a Nam guy I have the same doubts that you do about my era.
Serving in Nam isn’t something I am proud of nor ashamed of. I consider it to be a brain expanding experience. Saw and did a lot that I’d rather have not but at the same time I’m glad that I did. If that makes any sense at all.
I think it helped prepare me for the possible collapse of America, the Free. Boosted my self reliance and ability to look inward to myself for the help I’ve needed.