It fits my workflow well because 1) I generally only type in English, and need to access special characters pretty seldom, and 2) it's vaguely similar enough to how the Option key was used on classic Macs (and maybe modern ones, I don't remember) to generate characters like á, è, ô, etc.
Man, Unicode made life so much easier. I actually remember drawing characters like ≅ by hand, pixel-by-pixel, and pasting them into my documents as in-line images when I was writing my geometry homework in high school. The fact that I did that crazy amount of Yak-shaving way back then, I wish someone had just said, "Kid, you might just have #ADHD!" XD
cc: @dm