Question Component not working as component

I would love to be able to inherit from the component class and then add the script to gameobjects as a component. No update, etc, just it being liked to a gameobject. Sadly this is not how this works and you need to inherit from MonoBehavior for this.

Component has the basic functionality needed, so why isn't this a feature for more lightweight components?

 

Would it make a major performance difference? Unity already keeps track of what components do and don't have certain messages. Unity won't call a message if it knows it doesn't implement said message.

 

I was thinking it could be better for memory. If that's not the case then never mind haha