Scientific theories cannot be proven but can be disproven. If you don't understand this, your education is incomplete. Read about the
scientific process. It's true that skepticism is useful. It's true that scientists have been wrong. There is no such thing as settled science. In fact, it is a contradiction in terms. The peer review system is not perfect, but it beats all other ways of advancing knowledge. I suggest you learn about it. Scientists argue all the time, but that doesn't mean they are categorically full of bunk.
If you are looking for rationally derived knowledge, you look to science. If you eschew the generally accepted views because they are generally accepted, you are acting anti-rationalist.