Reasons are a human invention to help make sense of the world. If you want to base everything on logical grounds you will run into two things mainly:
Limits of knowledge. Knowledge is always incomplete, as more of it opens up more questions. There are things you intuitively know are good, but can’t prove why they are.
Systemic limits of logical reasoning. A sufficiently powerful and consistent formal system (such as formal logic) is incomplete, it cannot prove its own correctness. (Gödel’s incompleteness theorems)
Reasons are a human invention to help make sense of the world. If you want to base everything on logical grounds you will run into two things mainly:
Limits of knowledge. Knowledge is always incomplete, as more of it opens up more questions. There are things you intuitively know are good, but can’t prove why they are.
Systemic limits of logical reasoning. A sufficiently powerful and consistent formal system (such as formal logic) is incomplete, it cannot prove its own correctness. (Gödel’s incompleteness theorems)