It is often difficult to truly sympathize with others if you have not experienced the same thing as them. Sometimes it can feel as though your friend, or whomever, is exaggerating their grief or situation. It becomes a sort of nuisance to try to comfort someone who is going through this. Especially when they take “too long” to get over it.
However, when something is inflicted on us, it seems like the end of the world. You suddenly have all the patience in the world to grieve and for as long as you want too. You EXPECT people to be there for you, comfort you, and sympathize your situation.
I find it humorous that this is so relatable. No one really blatantly says it like this, but if they did, it would look very much like this comic strip.