Still related to the Ubuntu 19.10 post, the post on how Gnome Shell's performance was improved so drastically (by some accounts) is actually a really interesting read.

Particularly thought-provoking is the point on needing to use other environments to compare against your own. It makes sense, after all—if you only use X then you'll get used to its problems and stop noticing them, until you switch to Y which doesn't have them and have a sudden moment of realization—but I don't think enough people keep this in their minds when rolling through life. Sometimes a little perspective is needed, and the best way to get that is to step outside of your comfort zone in all the possible senses.