I also believe blackjack card counting AP works best as a part-time or supplemental income, or maybe something like supplementing a retirement income. And for a fulltime AP, best scenario is to have a spouse or partner with a good solid income and benefits (especially medical).
And speaking of medical, I think I am uniquely qualified to discuss what a full-time AP goes through mentally when he experiences a major medical event. This is the second time in 6 years that a major medical event has shut me down for roughly a quarter of the year. There are two aspects to this. One is the obvious fact that unlike a traditional job, when we (AP's) don't work or aren't able to work, there is no money coming in. There is no paid medical leave or vacation days that you can take.
The second is that in addition to no money coming in, medical bills start rolling in. Buying private medical coverage is costly, and most people that have private medical have somewhat significant out of pocket costs to keep the price of insurance down. So when the medical bills start rolling in, it is sort of a double hit....no money coming in and high medical expenses going out. Mentally this can create extra stress, which is the last thing you need when trying to recover from any major medical event.
My first go round with a major medical event six years ago, I was still building my bankroll and basically had no savings. So in that situation, no money coming in for several months, while medical expenses roll in, make it seem like your bankroll is hemorrhaging. Luckily for me, I am in a much stronger financial situation today (my second go around) than I was 6 years ago. This has allowed me to focus on what I should be focused on, growing stronger and making a full recovery.