Is this game gonna be played?
In May. The GM's said this a couple times.
Morgan is a master of the economy. Why should he waste that mastery on unit upkeep instead of using the saved money to purchase a conveniently-located, SotA army whenever he needs to go to war?
Because Morgan and other builders are using the "clean reactor" ability on their units. This ability makes the unit cost zero support. They are essentially free of maintenance, and you can have hundreds of them. It is probably one of the most gamebreaking abilities. Especially since it means a builder can put the entirety of their sterling industy capacity to work making even more. There is no reason for Morgan not to have tons of these units to support his probe teams.
News to me.
Alright. Now, let's get to my other points:
1. Convenience
-Simply put, we don't know which direction war will require us to have units in. Probably. Anyways, barring those unlikely circumstances, we'll need to either garrison our army throughout our whole empire, preparing for the day they might be needed...or we can just buy the units we need, where they are needed.
2. Efficiency
-Production we put towards units isn't going towards buildings, which improve a wide variety of things. Economy, future production, science--even wonders.
3. Speed of Response
-Oh no! The zealots are attacking! Quick, order the cities to make units! Great, our army will be ready in 3-4 turns! ...Or we could just buy it.
4. Banks
-Our credits don't do much good just sitting around in the bank. We don't even get any interest, lazy bastards.
5. AI
-"A
ha! Those Morganites look like an easy target, they barely have any military! ...Crap, where did all those top-tier units come from?!?"