Because usually when I want to offend someone I buy them a birthday card?
To the part I put in bold...Take it at face value. If it was a joke, that person meant nothing by it.
It would be one thing if he wrote that in the card, but...IMO, it's a generic birthday card. A million other people got the same one. 999,996 probably laughed at it.
Whilst I do agree with you that there may be some people out there who feel sorry for themselves a bit too much and don't do anything assertive about it, I don't think Alphasocket is one of those people (from the posts I've read of his). I think sometimes 'humorous' (I never know how to spell that word :


cards can be quite offensive. It was his brother buying the card - I've heard of brotherly banter, but if you know your brother is clinically depressed you don't buy a card like that.
Fact is, some people are warped enough that they would manipulate what should normally be pleasant things (a birthday card, a gift) into something that has the secondary purpose of causing offense.
When I was in year 10, we did a 'Secret Santa' in our class around Christmas time. In case anyone has not heard of that before, its when you put names in a hat and take it in turns to pull a name out, and you have to buy a present for that person. One of my friends received a fake dog poo from her Secret Santa. Such an object is, on its own, a joke right? But when given as a gift, it has a whole new context. I.e why choose that present out of all the possible presents out there? In the same sense - why pick that card when there a billion other alternative ones that aren't offensive?
I just think you generally have to be very careful when joking with others and only do so if you know the other person won't be offended. Personally I think the more laughs we can have in life the better, and most of my close friendships revolve around constant ribbing and joking with each other, my awful dress sense and tendency to ask stupid questions etc, and sometimes I've applied this same attitude to people I know less well in the form of well-meaning jokes that have not been accepted as such, and I've felt terribly guilty afterwards even though I meant no real offense.
I just feel that people should think more about the person they're joking about and gage whether or not they'll see the joke for what it is before going ahead and executing it.