I am a programmer and I don't understand Ethereum. Sure I haven't really read up on it but if I don't understand it, how will the common man? I have little fai

I am a programmer and I don't understand Ethereum. Sure I haven't really read up on it but if I don't understand it, how will the common man? I have little faith in this kind of system. Could anyone here explain to a noob how Eth would be any better than Bitcoin?