I think one major issue that one must take into consideration when choosing a Schematic /PCB package is the online availability of component and footprint libraries. I don't just mean the standard resistor and capacitor but also relatively uncommon components. Yes, you can also create your own but being able to just download libraries online makes the design process so much faster and easier.
This is where Eagle has an advantage since you can download complete libraries even for certain component manufacturers.
I ve been using Eagle for something like 5 years now and I never had to make a single component footprint yet and this is also one of the reasons I hesitate to move to KiCAD even with the new licensing restrictions imposed by Autodesk.