Apparently the median lifetime revenue for an iOS game is 3k. Not a lot of money, but if you consider that 90% of them are just "anime tits + sprite graphics + microtransactions == profits"... Seems easy to crank out one of those every couple of weeks once you've got the basic formula down. Plus, there's always the possibility of coming up with something that's actually good.
Maybe I'm being too optimistic here, but this doesn't sound like such a bad deal compared to a job in IT... your thoughts?