So flood, what reason would you have for fighting in WW3 or a major war? Be it for patriotism or money or whatever.
I personally would fight just because I could. It would be exiting to say the least.
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There are only two cases where I would fight. Case 1: Removing a tyrannical government. I'd rather fight and die for freedom than live under oppression. Case 2: Defending my homeland. A foreign power invades my country you bet your ass I will take up arms against them. I don't care if I'd be labeled as a 'fighter' and not receive the same rights as a soldier, I would still fight.