Been using git for 10 years now, never rebased, never had an issue.
Some people like having the context from the complete the history of little commits without the risks of rebase breaking something.
Some people like using rebase to group all changes needed for a feature into isolated(ish) commits.
Some people just like the aesthetics of a straight master branch without the clutter of little "corrected typo" or "fixed bug for real this time" commits.
There are probably tools built around merging too.
> You've never lived.