in case anyone is still reading this old thread.... I want to share my experience in seat 7C bulkhead.

most people mentioned that 7B gets bumped by bags.... well... 7C can be worse, at least on my flight. many people walking past 7B actually tried to avoid the person in 7B. they performed a slight turn. as they did that, their back pack or whatever bag they were carry also starting swing and ended up hitting my shoulder. it was actually a lot harder than 7B getting hit because most people are just walking mindless, but slowly down the aisle.... but when the try to avoid 7B, their bags gained momentum during the twist and hit 7C with a lot more force.(even if unintentional)

needless to say, i changed my seat to 7D on the return.