I've been using vi since my mentor at an internship sat me down with a copy of "Unix in a Nutshell" and told me to learn it. This was before I discovered Vim, so I think I was using nvi which had very limited in-editor help. It was a struggle, especially compared to the resources available today.

Around the same time, circa 1999, Tom Christiansen (of Perl fame) wrote an essay called "Zenclavier: Extreme Keyboarding" which still speaks to me, and is worth the read.

In brief, I've never been able to "zen out" in a typical non-model text editor, at least not the way I can with [neo]vi[m]. It's hard for me to overstate how great it is to not have to reach for the mouse - or even outside the home row of the keyboard. Christiansen calls this the "penalty zone" - any time you need to move your fingers away from home row, you're breaking flow. And when programming, it's something we have to do all the time!

There are other editors that support this kind of thing, like Emacs. Even VS Code and Visual Studio can be navigated entirely with the keyboard if you're willing to memorize their keybindings. But they generally rely on "chorded" keystrokes, which put your fingers into sometimes tortured positions (the old unix editor holy war joke is that Emacs stands for "Escape Meta Alt Ctrl Shift"). And often you still have to reach for keys in the "penalty zone", like PgUp/PgDn/Home/End.

I'm biased, having used vim keybindings in basically every editor I've programmed in for the last 25 years. It would be impossible for me to go back now. There are other modal editors, like Helix and Kakoune. They're basically like vi, but they reverse the order of the keybinds - which has some really nice features, and I might even suggest you try those before getting sucked into vim-land like me. But I do think modal editing, in general, is where it's at for pure text. Especially programming, but I use it all the time for other tasks like formatting textual data files interactively.

Anyway. Maybe it's a cop-out, but I think it's something you have to experience to really appreciate.