Well we see many instances of crying in the bible, in particular in regards to David's psalms. We also see in the story of Joseph that he cried after seeing his brothers, but he went aside privately to weep so that people would not see him do it in public. Now Joseph was a head of state but I believe there is an expectation that men do not show such emotions publicly. On the other hand in the story of the prodigal son the father runs in the streets overcome with emotion at the return of his son so it's hard to say where the bible comes out on it.
I think it comes down to context. Business settings are probably not places to be overly emotional but familial settings are different. We are supposed to have self-control but I don't think that means emotional repression, we're all different in the ways we express ourselves and I agree that there should be tolerance for the different types of emotional expression.