As a developer, you have these questions you need answered: How do I do this thing in the code? Why is it built this way? Why did this thing break?
There are a lot of developers who've never seen what a good code search tool can do for you. They might search inside their editor, but they're not benefiting from code search.
We're really building a brand new product that most developers do not have a ton of experience with, but that really clicks for them quickly.