Note by @fastfinge

Customizing my terminal makes me feel so productive! Of course, all of the time-saving aliases, hotkeys, and configuration changes I just made I'm going to forget within two days, and they'll never make it into my muscle memory. But hey, if I change several of the habits I've developed over a lifetime of computing, the modifications I just spent an hour making could save me as much as 0.2 seconds per month!