ADF for life?

I used the search function but couldn't find anything.

I'm hopefully tempted to try living on 40-44h fasts for the rests of my life. That's how good I feel. Bur I wonder if 4k kcal and 180g protein are good enough longterm.

I wonder if there are people out there living an ADF lifestyle for life? If so please tell me how many years you do this already, how long you fast, and what's your nutrition tips for the feasting window?