My company moved from all on prem, to all in AWS. Having used both, I'd much rather go back to on prem. I did architecture, capacity planning, system tuning, deployments, etc. I knew everything about all of them, and treated them as sacred. The next generation came in, deciding not to learn anything about systems and brought in the 'systems as cattle' attitude and everything that comes with it.

I try to remain objective, there are some pros to AWS, but I still much prefer my on prem setup. It was way cheaper, and deployments were way faster.