I've programmed in Progress for about 4 years (2006-2010). The language itself is far from awful. It's actually a well thought and easy to learn language. Every

I've programmed in Progress for about 4 years (2006-2010). The language itself is far from awful. It's actually a well thought and easy to learn language. Everything not obvious in it is well documented. What I didn't like about it was its very proprietary nature: closed source, its lack of libraries (no json parsing library back then IIRC), you'd have to pay even for its VM. TBH, I found it more difficult to master Perl than Progress, but the effort was worth it.