I know what you are saying. I love Google Reader but it's not got all the 'web 2.0' shiny buttons and things that people love these days.
I started to use Feedly a while ago as it's a more pleasing experience than Google Reader. I agree with you though - I don't know why they didn't upgrade Reader. If I had to have a guess, it would be so they could include some national papers (Sun, Metro, Guardian etc) in the feed straight away. I'm sure that must be generating some revenue for them.
Also, to be fair, Currents is a lot easier to share into G+ with than Reader currently is - certainly from my mobile phone.