I paid for Sublime Text 3 while I was still using it. Even though I switched away (to Vim/Neovim, then Kakoune, then Helix), I don’t regret it at all. It was a fantastic tool I used for about two to three years, and it brought me far more value than the $70 it asked for in return.
In fact, I’ve since bought a ton of other software when it’s proven useful more than the free alternatives. I’m particularly happy when it’s sold by a small team, just like Sublime. Some favorites I currently have installed: Acorn, Fantastical, Ivory, Monodraw, Things, Transmit, and Tweetbot (RIP).