Epic and Cerner and other proprietary systems are too expensive for many practices in the US and have simply placed both a huge financial burden on the medical system and a productivity burden on the physicians.
Physicians need to take back their EMRs and their productivity and OpenEMR is a great route to do this. For example, a practicing ophthalmologist, whom is also a software developer, developed an eye module in OpenEMR with the goal of the physician maintaining productivity (ie. not to spend time entering meaningless data in an awkward and distracting fashion), which he succeeded at. Can read about the project here: http://www.open-emr.org/wiki/index.php/Eye_Exam
And right now OpenEMR needs more volunteers, physicians, developers, and donations to keep progressing. And what is so great about an open source project like this is that if OpenEMR keeps doing great things in the US, then these achievements are essentially multiplied by 1000 as low resource areas throughout the globe get free access to this same open source fully functional EMR.