Do you know how dumb it is to get emotionally invested into something you have no control over? You're probably one of those people, and if so, you are retarded. Any true man who has a true sense of logic would not get that emotionally invested to the degree you are talking about. To give you an example go talk to a Surgeon, or better yet talk to a Cardio Surgeon. (My father is one) and he'll tell you (as he has raised me) that the most important thing is 'state of mind', and not to get too high or too low, if you let petty issues (Such as a soccer game result) control your emotions you're bound to have screw ups in life, in driving, in working, in relationships with others, everything and anything. It's one of the major causes along with substance abuse that drives people to make poor decisions. People who grow up tend to be able to make that differentiation, but then again not everyone grows up (Which is probably true for the majority of the COH2 community).
If you still disagree, I would love to see you go under the table with a surgeon who is emotionally invested and is having your definition of a 'Bad Day.' Sure you can sue him for Malpractice etc. etc. etc. but it still goes back to why you don't get emotionally invested into things to which you have no control over.
Each individuals has a capacity to which they can have pure focus/concentration and energy. What you choose to 'waste' yours on, is up to you, but those decisions can easily affect your life and where you end up in the grand scheme of things.
If you know a surgeon, go ask him yourself, if you don't know one, try to find one ask them. I promise you he will tell you that if anything he enjoys watching soccer, has a favorite team etc. etc. But he won't let the outcome of a match adversely affect his overall emotions. I'm over 1,000 miles away from you and I'm certain if you talk to one he'll say exactly that.
All I was saying is that my comparison to soccer is perfectly valid. I never claimed to be one of those people. My key point is that taking a hobby seriously like many coh2 players do is nothing unusual and considered normal at least in my culture.
Your post is nothing more than a theory. You could also argue that getting worked up over things that are completely irrelevant from an objective point of view functions as sort of an outlet that helps you to be able to stay calm when it comes to life challenges that actually matter.