When did you realize you need Kubernetes in your setup?

Hi,

I have started using containers in my setup, both in solo projects and at $JOB which is a small product company. I do not know much about Kubernetes at this moement. I am wondering if it will help me manage multiple containers better or something like Portainer would be sufficient. For some years now my approach to most of the tech decisions have been "you will discover when you need $SHINY".

I am wondering when you guys realize you needed Kubernetes in your setup. What were the key factors that led to this realization? After using it for some time, at this moment, do you think it was worth it?

Thanks.