I guess it's a difference of sensitivity or something between us then. Some counter examples I know of: A friend who was literally shot by a mugger not too far from the apartment he was staying in at the time. While he was a bit shaken initially, he had a strong support network of family/friends to fall back on, and he has a good ability to laugh at things. Within a week or so he was pretty much back to normal psychologically, and hasn't shown any signs of problems in the years since. Heck, he actually somewhat can laugh at that situation now. A classmate who was attacked by a person with a bottle, had their arm beaten up something badly and lost some of their stuff. They came out of the situation a touch vindictive and were rather happy when the person was found, but other than that they were fine even in the longer term. Another person who has been attacked multiple times over the course of his life, and again, he's still totally okay (his only mental symptoms being the push that inspired his passion for ju-jitsu and led to becoming an instructor of it).
Again, it's a personal tolerance issue. Some people can walk through war zones and come out perfectly okay, while others are shattered by far less, and there is no shame in either.
I'll reiterate, my intention here is not to somehow lessen what happened or it's impact, my use of the terms I did was simply because I know people who have been put into the hospital for periods of time due to things like this, ("lesser"), and because it doesn't appear that this event has happened over a long period of time or repeatedly, ("isolated"). I simply would like to emphasize that, if Pisskop is one of those people who bounces back well from trauma (a cue that could be potentially drawn from the fact this was posted in the WTF thread instead of say, the sad thread, combined with the more calm/angry tone of their post) then there is no need for them to feel that they have to go see someone about PTSD and waste money that could be spent elsewhere (going rate for the diagnosis consultation alone in my area is about $80 at a minimum, which means about a week's worth of decent food money at the least, and scaling up harshly from there).
If they feel they need it, or they have money to spare, then by all means, go; as you mentioned, it can't really hurt you directly. But if they're one of those people on here who is scraping money for day to day (and I know there are several of them present on this forum) than they might want to consider how much help said treatment might actually provide before just immediately turning to treatment they may not need. (I do double suggest the police report though).