[CraigJPerry]

I feel like I get a decent return on mining historical command usage for new (single keystroke?) aliases to setup, the most useful ones change over time for me.

Another use case I feel pays off is complicated one-liners where I need to do something similar but not quite the same again - good starting time saver. This depends on you being a mostly cli kinda person obviously, if you instinctively reach for excel over awk then ymmv.