Open carry if you must.......concealed just eliminates so many "issues" with nay-sayers, law enforcement, general public ignorance/fear, making yourself a target possibly......no one really needs to know, can't think of one thing that open carry does, that concealed carry doesn't do much better......just saying 
More open carry by good folks might normalize views that guns are tools that can be put to good use. So many people now a days are only exposed to Hollywood portrayal, blood sport video games or ganstas. This ignorance from the general populace is perhaps the greatest threat to the 2nd ammendment in general
Despite the pen being known as mightier than the sword, imagine if there was a frothing at the mouth clammer to infringe on the first ammendment. How ridiculous would it seem to license someone to express their opinion against the government? How sad would it be if we all took pleasure in the right to think about grievances towards the government but were hesitant to actually speak lest someone be offended?
I get it. I also don't have much time to waste on being hassled by LE nor do I want to scare the children at school, etc. I'm just as guilty of not being as vigilent as I could be. Though I prefer to conceal, I applaud those who carry openly and honestly believe OC is a deterrent, the bad guy preferring easier prey. Obviously, situational awareness and street smarts is key to being a deterrent vs. A snatch and grab target of some of the slobs that so many have seemed to notice. Maybe those slobs have been weeded out already in Detroit.