Yes, anyone that wants to defend Ukraine should go and do so in person. Leave the rest of us out of it. There is no reason to risk a single American life or dollar on defending Ukraine.
Bingo! The use physical aggression, in this instance no more than exploitation, should serve as an active case study for those that imagine getting close to Russia as it currently exists. There were peaceful ways to resolve Russia's security concerns. Sadly, the same can be said for the China-Taiwan issue.
It appears today's globe is facing, in simplistic terms, not one but two pre-WWII-like Germanys and, to coin a phrase, Biden is no FDR.