I think your disapproval of animal charities is based on circular logic, or at least an unproven premise.
You seem to be saying that animal causes are unworthy recipients of human effort because animals aren't humans. However, people care about animals because of the emotional effects of animals. They care about people because of the emotional effects of people. I don't think it's proven that people only like animals because the animals are super-stimuli.
I could be mistaken, but I think that a more abstract utilitarian approach grounds out in some sort of increased enjoyment of life, or else it's an effort to assume a universe-eye's view of what's ultimately valuable. I'm inclined to trust the former more.
What's your line of argument for supporting charities that help people?
You seem to be saying that animal causes are unworthy recipients of human effort because animals aren't humans. However, people care about animals because of the emotional effects of animals. They care about people because of the emotional effects of people. I don't think it's proven that people only like animals because the animals are super-stimuli.
You may be interested in Alan Dawrst's essays on animal suffering and animal suffering prevention.
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.