Not just because of its looks to be fair. Not being native Rust is a pain, and GTK only really works nicely on Linux. At least without a ton of effort to fix everything (I think some apps like maybe Mypaint have done that, but I don't want to).
Def agree. It feels unnatural to be using gobject in Rust. Refcell everywhere. But the end result (at least on Linux) is fast, well integrated and looks nice.
