I don't understand this. About the closest thing I experience to this is when I am climbing or hiking and encounter people completely unprepared or being dopes. But it is their ineptitude that frustrates me not their presence.

Do you feel you have more of a right to be there than they do? Is it that you feel threatened by them and their presence? Is this anxiety related? Could this be a trigger to some OCD related symptoms? Would you say you are reacting to intrusive thoughts?

Look, I'm going to be direct. It seems you have an unrealistic sense of entitlement.

To be more supportive however there are things you can do. Can you talk to a friend about this? What about your employer's EAP? A therapist? Even your family doctor. Are you already diagnosed and seeing a professional? Ensure s/he know about this too.