This might sound harsh, but between this and your unwillingness to go above prince... what we get out of something is generally proportional to what we're willing to put into it. It sounds to me like you don't want to commit anything, you just want to sit back and have entertainment find you. Typically as you get older this becomes less and less an option, entertainment doesn't come so simply anymore. It is at this point you must start seeking greater challenges, more and more complex rule-sets to avoid monotony.
You're unwilling to do anything to change your experience of Civilization V, and you're unwilling to try different games. Yet you seem obsessed with 'moving on' due to monotony. I think this is actually a form of insanity.
If it's intimidation keeping you from CK2 or EU4, I would encourage you to push through it. I would recommend CK2 however, it is more of a sandbox. You don't even need to understand all of it to enjoy or play it. Half the appeal of the game is simply watching the simulation unfold.
That did sound a little bit harsh, and quite uneccessary for two reasons
1. I don't know why this topic turned into "The OP is bored", that, as far as I know, wasn't the debate, it was if people are done with Civ 5, it just turned into it being about me which I never wanted because of how i choose to play the game
2. Why am I not allowed to be willing to move on when a game that I played for over 1500 hours is boring to me? I can't help it, I tried King got bored the first few turns, there's no more surprise, that's not my fault, neither it is a game I have just played enough with this game to feel like I could use a change.
I don't have the time, or bother enough to really learn EU and CK, they are big games but I have the right to that.
You made me sound like I was lazy (which, in al fairness I am, but I should not be chastized for it because you feel that I'm being reluctant to take such a pointless risk (pointless because it isn't something that will change my life).
Hopefully that didn't sound harsh.
Besides, you have no right to tell me how I should live my life, which I feel you tried to do. Your post was, in essence, a jab at me because of how I chose to look at these games.