Comment by luhn

In my opinion the best argument for RDBMSs came, ironically, from Rick Houlihan, who was at that time devrel for DynamoDB. Paraphrasing from memory, he said "most data is relational, because relationships are what give data meaning, but relational databases don't scale."

Which, maybe if you're Amazon, RDBMSs don't scale. But for a pleb like me, I've never worked on a system even close the scaling limits of an RDBMS—Not even within an order of magnitude of what a beefy server can do.

DynamoDB, Firebase, etc. require me to denormalize data, shape it to conform to my access patterns—And pray that the access patterns don't change.

No. I think I'll take normalized data in an RDBMS, scaling be damned.