Oddly relieved

"I know this will not go over well, but I'm kind of ready to let go and move on."

There is nothing wrong with this feeling at all. Today's games are designed to make you feel like you have to keep playing. To earn an achievement, finish a quest, maintain a streak, etc. etc. These things turn games into jobs. And while there is still some enjoyment of playing, it can take the pure enjoyment out of it.

Game designers are smart. They know how to hook people (especially younger people) and keep them playing (spending). 

So enjoy your feeling of freedom.