Why is rebase good?

Could you please elaborate on the benefits of rebase? Could you explain what makes rebase advantageous, and how does it contribute to the overall health and efficiency of the system? Additionally, are there any specific scenarios where rebase shines particularly brightly? Would you mind providing some examples or use cases to further illustrate its usefulness? I'm curious to understand the rationale behind its popularity and how it benefits users and developers alike. Thank you for taking the time to explain this concept to me.