Again, none of this has anything to do with serverless architecture vs non-serverless architecture. There are many PaaS providers that would eliminate all of your complaints that aren't "serverless". They just manage the server for you. But you still write a normal app that you can easily run locally or port anywhere you want.

If you decide you don't like the service, you're app isn't tied to a proprietary API or architecture.

And you don't need to manage additional VMs for stateful services.