my life needs to be generally pleasant otherwise, and the work needs to be at least somewhat meaningful. I've tried the "just grit your teeth and toil" mentality, and it doesn't work - maybe for someone else it does, but not for me.
The first part is the part I'm calling into question, not the second. Of course you need to be electrified by your work. It's hard to do great things when you're toiling instead of playing.
But your standards for general pleasantness are, as far as I can tell, the sieve for a lot of research fields. As an example, it is actually harder to be happy on a grad student/postdoc salary; instead of it being shallow to consider that a challenge, it's shallow-mindedness to not recognize that that is a challenge. It is actually harder to find a mate and start a family while an itinerant academic looking for tenure. (Other examples abound; two should be enough for this comment.) If you're having trouble leaving your network of friends to go to grad school / someplace you can get paid more, then it seems likely that you will have trouble with the standard academic life or standard corporate life.
While there are alternatives, those tend not to play well with doing research, since the alternative tends to take the same kind of effort that you would have put into research. I should comment that I think a normal day job plus research on the side can work out but should be treated like writing a novel on the side- essentially, the way creative literary types play the lottery.
Ideally, I'd like to save the world. One way to do that involves contributing academic research, which raises the question of what's the most effective way of doing that.
The traditional wisdom says if you want to do research, you should get a job in a university. But for the most part the system seems to be set up so that you first spend a long time working for someone else and research their ideas, after which you can lead your own group, but then most of your time will be spent on applying for grants and other administrative trivia rather than actually researching the interesting stuff. Also, in Finland at least, all professors need to also spend time doing teaching, so that's another time sink.
I suspect I would have more time to actually dedicate on research, and I could get doing it quicker, if I took a part-time job and did the research in my spare time. E.g. the recommended rates for a freelance journalist in Finland would allow me to spend a week each month doing work and three weeks doing research, of course assuming that I can pull off the freelance journalism part.
What (dis)advantages does this have compared to the traditional model?
Some advantages:
Some disadvantages:
EDIT: Note that while I certainly do appreciate comments specific to my situation, I posted this over at LW and not Discussion because I was hoping the discussion would also be useful for others who might be considering an academic path. So feel free to also provide commentary that's US-specific, say.