The warning regarding "public, shared, or stable branches" is always warranted, but I think those warnings end up reverberating where they needn't. Before interacting with anything public or shared — when working solo or locally — `rebase` can be hugely helpful. When starting out with something complicated, I often make separate commits for different files or steps; using rebase to reorder commits or amend can make turning your first steps into a viable change much easier, and can help with merge conflicts down the line. I also find it helpful for large commit messages; rather than needing to write everything at once, making liberal use of `fixup` or `squash` can keep disparate thoughts or bug fixes manageable.

I'd never use it on a public or shared branch, but `rebase --interactive` and `--exec` are some of my most-mused git aliases.