It's absolutely fine, I am a fairly emotional guy and I don't care, if something strikes me emotionally then it can bring out tears. Feels really good to get out your emotions, whether they are tears of joy or ones of sorrow it all helps.
Shows you're human, anyone saying they don't cry is missing out or lying through their teeth.
Off topic mildly, but this shit just made me tear up as I was replying to this thread, amazing to see someone in the mainstream who can really show some emotion, fucking beautiful shit right here.