A Large army was never in debate. It was how large the army needed to be. There are 2 contentions:
1) Your assertion that the army needed to be in the trillions. A number that was never supported outside of your personal belief.
and
2) That the stormtroopers were clones by the time of the galactic civil war. Something which, again isn't supported by canonical evidence. Evidence has strongly stated the opposite, that the clone troopers from the clone wars were phased out in favor of recruitment/conscription. Humans are plentiful enough in the star wars universe as demonstrated by the movies.
Do you know how big a galaxy is...oh you don't because you are obviously braindead.
A million people is enough to fill a small caribbean island.
And by your assertion the captial planet had over a trillion people in it.
You obviously cannot count and haven't watched the film properly.Stop wasting my time.