bitmixer was paying 0.035/week and when btc was $500, it was $17/week. At best, when btc was $1k, it was $34/week. By not posting, I was literally throwing my money away. And I skipped, weeks, months... Please explain this to me. 

I was signed up for that at that price level. My record was spending an entire week's wage on a piece of shit neoprene laptop sleeve that ripped immediately on arrival, and it stank the room out. I kept it and gob on it occasionally.
Everyone's levels are different. But I wouldn't be in a campaign that paid considerably less if I felt in any way compelled to grind out posts to meet its requirements. If there were no minimum and no particular upkeep required then it would be fine, but most want more for their money which is fair enough.
The Bitmixer campaign was undemanding so it worked for me. I was happy to be here anyway even though it paid what seemed like peanuts at the time.