For those of you mentioning the esc key, I suggest mapping capslock to esc, I've been doing that for years now (both Linux and Mac) and it's awesome. Except when you're using someone else's computer and constantly turn capslock on and off...
Edit: You can do this natively since Mojave(?) in the keyboard settings without having to resort to something like Karabiner.
Edit: You can do this natively since Mojave(?) in the keyboard settings without having to resort to something like Karabiner.