A decade of Matrix discussion has indeed been erased from history. It was not in my control, and my backups were as corrupt as the database in the end. It was better for all of us to have a clean start, anyway.
Plus, there were literally about 5000+ non-working e-mail addresses in the system (and many of those from good users). Those e-mail addresses kept bouncing e-mails back to me and wasting my time, every time someone would comment on a thread they were subscribed to. I don't have time to delete unnecessary junk email every day. This has saved me accumulated hours. I'd rather my life than my content.