I enjoy that every day feels like waking up on Saturday, only better. No Sunday evening dread, no having to pace my crazy non-conventional life, around what seems born-spend-die drones. Shopping at off peak times, smiling when asked what is the best time to schedule XYZ, saying "oh, any time is fine." Feeding birds all winter, drinking tea as I watch them survive and stay healthy, and taking time to volunteer along a wide range of situations, never forgetting how lucky I am, wanting them to have a better, easier life lived from another perspective.
Not giving a damn what anyone thinks about my lifestyle, and promoting it to others. Giddy knowing I will never have to do a job I hate, ever again in this lifetime. I love that I can exercise when I like, as long as I like, go to the library, and zone out for hours in a world of imagination, introspection and calm. As said by others, it's freedom, life on your terms plain and simple, and sorrow felt for folks who are still blinded by so much, that IMO and experience matters so little.
Because I like balance, I should mention some issues I have found less than OK so far. I absolutely hate where I an renting, and bummed because trying to find a home to purchase has been a fruitless, very depressing situation. This negative, extremely stressful, no peace in my life situation permeates about everything else, and I need a break from it. Although I smile when asked about making appointments, I find even one too many... I'm too used to not having any constraints on when/how I do things, and it feels restrictive. Medical insurance costs have been rising so fast, I fear what the future may hold... Better and cheaper my ass.
There are others I may expound on later, but being FIRE (investments just went over $1.5MM, yay) is the best it can get, and I know there is no way I could ever go back. Thanks for sharing MMM folks.