Corky nailed it there is nothing about this silly game that's worth getting genuinely angry about. That being said I have been known to lose my tempter from time to time, usually when I'm having "one of those nights" and generally speaking it's directed inward rather than outward. I do spend a great deal of energy confining that frustration to myself or at least squad vox, most nights I simply log off before that frustration get's out of hand. Venting it towards other players or on 200 doesn't help anyone.
If I'm frustrated or angry then I'm not enjoying myself, and if I'm not enjoying myself then I'm also probably not a lot of fun to be around so what's the point in playing? At that point I usually log and take a breather.
There is nothing about this silly game that's worth getting upset over, save that for real life and things that matter.