saner defaults, easier configurability (esp. mouse/keyboard, where the documentation can be less-than-clear; and imported config files, where the path doesn't always resolve cleanly), user-friendly documentation available in multiple forms (Alacritty has declared they will never do this: manpage and website only!), lack of dismissive attitude from devs (in addition to manpage stubbornness? no to "smart copy", no "example config", no "reset and clear scrollback" which was a 6-line ready-to-go PR, no "confirm quit" when tasks are active or even when the user prefers it), better integrated with GTK libraries and GNOME extensions (no strange Alt+Tab popup behavior, unresolved IBus weirdness), good proof of concept for an alternative new-ish programming language, Alacritty is generally not faster or leaner or bug-free compared to some other terminals: every now and then I would open top and alacritty would be at 8 or 9 percent while just being open in the background (and with reasonably high physical memory usage; just because my machine has the RAM doesn't mean I want the OS to allocate it to over-hungry Rust utilities)

I can think of a dozen excellent reasons to stop using Alacritty (and not in favor of Kitty) and I did because of some of them.

I don't want to learn tmux to handle a feature that my OS already handles. If alacritty supported tabs (and was slightly less hostile, e.g. [0]) I'd be happy with it

[0] https://github.com/alacritty/alacritty/issues/3129