The bad of model building. Maybe.
I'm new to model building, and I think I've already found the worst thing about it. I have the model, I have all the things to try and make it great, and I have no time to do it yet. So I wait for that opportunity to get started. But I know when that opportunity will come, yet it is still about a month away. So I wait patiently/impatiently and contemplate all the things I will and want to do.