Woah, that's quite a response. I feel... honored.
I'm just going to keep it short and give my view why I rather stay in BTC instead of fiat.
Selling month to month may sound like a crazy way to manage cash-flow. But see it as a salary or DCA if you like. Bitcoin is my main source of income and has been so ever since I quit my job in 2016. The reason I'm staying all-in in BTC and not selling more than needed is because I feel that is the safest bet. Just like your strategy has been a success for you, this strategy has worked out pretty well for me. I'm doing OK.
If this indeed was the top of the bull-run and we were to enter another crypto winter, I can manage that too. Either way, I will try to take advantage of the volatility with my trading stash, which currently is around 5% of my total stash.
What's the worst thing that could happen, bitcoin going to zero over night because of some unpredictable event? Fine, that's not the end of the world (or maybe it is?). If it's not, I guess I'll just have to look for a job again. At least I had one hell of a ride.