Custom UIView from Xib - requirements, good practi

问题:

I'm trying to wrap my head around the topic of creating custom UIView using Xib files. I've done it many times, but I've never thought about why this process is so complicated, and which parts are necessary, which are good to have etc. And right now, because Xibs are the main component of the project I'm working on, I started questioning everything - I need to be sure what is happening