Okay I was mad after reading that postcard. I need to get read for a meeting but felt compelled to let you know that I believe anger is perfectly appropriate for that postcard.
I am angry that a supposedly full grown man is still utterly a complete child. And on top of that this manchild is passively aggressively begging for love and sympathy from his children. The only reason he is sleeping in a tent on someone's lawn is because he has chosen to not work and to not take care of himself. Why should anyone feel sorry for someone for their own ADULT choices?
What an appalling father figure for your kids. There is no way for this type of behavior to NOT have an effect on your kids. ! would seriously consider having them meet with a therapist to discuss this very communication!
But what is happiness except the simple harmony between a man and the life he leads? ~Albert Camus