I'm donating to for a number of reasons. I do it because I love the user experience. Because I've been using it pretty much daily for almost two decades now. Because the team seems inclusive and promotes values I believe strongly in, beyond FOSS. Because I use GTK apps all the time and I want them to get even better - and more numerous. Because I want my phone to be running GNOME within a few years. Because you come across as run by humans, not a bunch of faceless suits.