[@Monochromatic Rainbow]If you mean Rods of God kind of mechanism, such satellite systems are actually ridiculously easy to intercept. Both the projectile and just destroying the satellite before it reaches them.
With all the upgrades in energy and the fact propulsion systems run on that I think nukes are going to get fairly frequent use for anything but bombing cities (since that's horrible and banned).
A stray nuclear missile hitting your satellite would destroy it long before it gets into position.
Rods of God are cheap only when the enemy aren't ready to blow the fuck out of your weapon systems.