Carson Flores certainly had some ideas, like secretly stealing part of it, since no one would know the exact amount before it was handed in, or swapping the bottles to pass fakes as the real deal, and then finding a way to escape after leaving the Secret Realm.
There were plenty of methods, but all required taking risks, after all, he was just one person, whereas the opponents were eleven; if exposed, it's no surprise they'd kill him.
Now, obtaining all the Heavenly Secret Profound Divine Water safely and without any risks, plus not having to reveal his identity, is obviously the most satisfying.
Moreover, he doesn't owe anyone a favor, nor does he have to get involved in their internal conflicts, isn't that great?
"What's your current situation, any chance of victory?"
