Spaceflight

I see where you're coming from, but I still don't think it's likely personally.

It's simply not worth it. We can already hit any target on earth with a nuclear strike without the added risks and complications that come from putting weapons in space. If you put these targets in space, and an enemy attacks them, globally humanity loses all access to space indefinitely.

That's simply not worth it even just from a pure military perspective given the value to communications, navigation and intelligence that space access provides.