Bahahahaha, Waateva just wants that sweet sweet victory.
Honestly, I just like to play with humans instead of AI because higher difficulties really just let the AI cheat, but it doesn't make them any smarter. So even on Deity, if you know a few tricks and know how to abuse the AI's weaknesses such as their almost complete inability to fight naval battles, you can still win pretty easily.
Humans are more fun to play with as there is so much more variety in the playstyles, more secret deals and backstabbing, and less predictability in general which makes even losing more fun than winning against the AI