At this stage, I feel like I'm too old to setup a new project and setup a database and write migrations and all that. I just wanna all that setup for me and I do something less mundane. It's probably why I don't start any new projects anymore.

I'd say that's exactly what senior means.

At least in my case, over time it became me telling them how it should be done, and juniors doing it.

@CoreFusionX amen to that! Work yourself out of work.
Also the scaffolding should just take about a day max (as in empty working service with comfortable local dev setup, production and testing/staging production clone). Especially a microservice environment should cater to that. We have to create and maintain quite a bunch of them after all.

everyone is.

Same. And I have a full 17 years to do this crap until I can finally retire.

Depends.

I usually have a plethora of template repositories.

I don't like most project generators, cause they are a dual wielded sword (which mostly like to stab one in the back).

So I just have a lot of small preconfigured git repositories lying around. Plus Python script to update them (library updates etc.) and generate a dependency list (mostly to have an overview of the latest state of things).

Rest is sed and shell (config updates etc.)