Another positive: because of the limited duty hours per month, if you have some other skill that can be put to work on a
very flexible schedule, like some sort of online work or maybe shining shoes, you can supplement the meager wages by working when you're off-duty.
Many more-senior airline pilots nowadays do just that, especially once they have settled into some kind of routine: they start their own business or do some sort of freelance work. Even veteran line captains don't make what they used to, in terms of how much their paycheck buys... and with the gutting of most pension plans, they have to worry a little more about their standard of living when they are finally put out to pasture. The days of two weeks off playing golf or whatever are pretty much over.
I think most noobs don't get to do much with their off time because they're either being moved around a lot or they take any standby assignment they can in order to build time.... but I'm sure a little extra income could be eked out with some creativity and flexibility.
But in the end, unless you really, really want to be an airline skipper some day, and don't care what that means in terms of lifestyle before or after retirement, it'd be wise to stay away.
As a 757 crewman I know once told a youngster (who was oohing and ahhing over a bizjet cockpit and claiming interest in flying as a career): "If you're smart, you'll start working now on getting so that you're sitting in the
back of one of these, not the front!"
