It should be pointed out that the vast majority of the military are in support career fields, not combat units. Also, the GI Bill absolutely makes it worth it.
Yeah less than ten percent is combat trained and tasked and only a tenth of them (so 1% of the total) are combat veterans.
Most of the people you've thanked for their service probably worked at a job that civilians do everyday like fixing things or doing paperwork. Just in a uniform.
My primary job was a logistics account, but that meant I had to inventory high value items at Forward Operating Bases in Iraq and Afghanistan and I drove in a few convoys, only once anything significant happened.
There's no state that allows recreational purchase under 21. Vapes are considered a tobacco product regardless of nicotine content and also require you to be 21.