I'd posit that it's not as simple. Maybe if you're just cranking out your one-off app or something of the sort...
But getting a good replication setup that's HA, potentially across multiple regions/zones, all abstracted under K8s - yea. That's not trivial. And, it can go very wrong.
> I bet you also hate on people making their own espresso instead of just going to starbucks
This is just unnecessary.