Though I do agree with a lot of it, and I share a lot of disdain for the business model of education that now exists, especially here in China, a lot of your disdain for current scientific fields appears to be coming from a lack of understanding of what it is.
For example, you say Astrobiology isn't science because how can we study something we don't know exists? But that's not what Astrobiology is, once you look past the actual title.
Astrobiology is the study of life on earth and the Universe. It doesn't mean, seeking life. But it does mean, for example, finding complex molecules on other planets, figuring out the chemical components and amino acids on asteroids, how life here may survive in space, what are the environmental limits on the human body, and it generally plays a crucial role in manned missions, space suit designs and so forth.
To say that's useless and should be replaced seems a little naive.
The same goes for Psychology, which you write off as obsolete. But if you've ever had a sibling or friend suffering from various mental conditions like I seem to be surrounded by, Neurobiology isn't the field you want to be looking into. Psychology grants a greater understanding of human nature and what we are. This plays a crucial and sometimes life-saving role in childhood development for example, as well as helping with the development of drugs for conditions like Parkinson's.
It's not that one should replace another, they should instead work with each other, which is precisely what they do.
I understand that you're coming from a rather jaded point of view, which is really pretty understandable, but if there's one thing in the world we should put our respect into, it's science. As flawed as it is, that is a result of the human component, but it's a self-correcting mechanism and that's what we should come to expect.
To fight for a world where there's some unflawed system where everything is pure and perfect is a dream, unfortunately, but I feel the way things are, are pretty much as good as they're going to get (aside from a re-balancing of budgeting and reformation of education).