Because it launches instantly and takes up almost no resources (while still being able to use LSP, etc.)

Also, after about a week or so of use, I feel I’m more productive than I was. And my browsing and editing of my code better mirrors how I conceptually think about it (not in lines and character positions but in language-level constructs which I can easily to navigate between and manipulate).

On the other hand, it’s modal – not for everyone. Steep initial cognitive load.