I think this article by Katy Bowman is very moderate in its take on bras. She talks about bra-free living kind of like the barefoot movement; that you should gradually let your tissues adapt to the loads of support vs no support. I agree with The Real Amy that lymph and breast massage is beneficial, but especially if you are hunched over a computer everyday and get adhesion spots due to the fascia getting locked in one position that can impede circulation of blood and lymph.
http://www.alignedandwell.com/katysays/thanks-for-the-mammaries/#sthash.rtMH9kfC.dpbs
