Forgive me for the ignorance of my question.

I'm tired creating backups, or loosing data. Let's be honest, sometimes it happens. Does a filesystem that never deletes/overwrites anything exist?

I envision something like an append only filesystem where you all files in your hard drive are under some OS level 'version control' and you can rollback to any version you want. Only files in my home dir would be enough. Obviously once space runs out it would start overwriting the oldest versions.