Rephrasing your "inquiry" to highlight how short-sighted this is:

If giving the ukranians nuclear warheads could help them default Russia, then isn't that good? Wouldn't using nuclear warheads to erradicate Russia end the war almost immediately?

Like, why are we even bothering with automated killing robots? That's stupid. We already have nukes, and they're the ultimate weapon, so just do that.

Do you not see how this greedy line of logic could easily lead to the destruction of not just the US, but the entire human race?

This is LITERALLY the plot line of Terminator. Literally. "Hey guys let's build skynet, isn't that a good idea??"

Like... do you not hear yourself? What is not clicking here?