If it wasn't for US military power, Russia would have already overrun Ukraine. And if Iranian nuclear program is destroyed and the regime falls, it would be a good thing. For context, I'm from Czechia.

I'm from the US and strongly disagree that either of those things are a benefit to me as a US citizen. All it's doing is taking my money and putting me more at risk, and in the case of the attack on Iran: making me complicit in the most immoral acts imaginable.

As a US citizen you benefit from the status quo and global peace being maintained.