I was pretty specific in why I use Manjaro MATE as my daily driver, dual-booting with Ubuntu MATE Focal for the testing, and for the Steam games which won't run on Manjaro (Torchlight II (!) and CIV:BE).
There are apps which Canonical itself deep-sixed from their repos, specifically Aqualung music player, exfalso, pypar2, and avidemux, and a couple others I can't think of, which are all available in the AUR. Compilation is automagic, and the system already knows all the dependencies. It takes longer than installation from repos, of course, but you HAVE THE APP, and, after the sometimes dependency hell of compiling code myself, it is a real pleasure to watch the system perform something which took a lot longer to do on Ubuntu.
I will always love Ubuntu for my escape from M$, and will always love Ubuntu MATE for the best damn distro available, and one guy on YouTube, comparing distros, said that the best distro of 2019 was Ubuntu MATE, his own daily driver.
So polish your fingernails, devs!