I have used other cad and PCB software, and most have some problems with their UI and command set. BUT Eagle has by far the worst UI, and the worst command set I have come across. There is always a learning curve, but some things should be intuitive. Some examples mostly for the Library Editor:
1. why are symbols not broken out in the library so I can copy them for a new part???
2. Speaking of copying, why can't I edit(modify) an existing part, and then save it as a new part???
3. In the Latout Editor, why can't I place parts on the bottom layer????
These are just a few of the things that, if they exist, are hidden very well!!
This software may produce excellent PCBs but not worth the headaches!!!
Rick