It's ok to understand other people. But it's not enough. Advertence is necessary too. Because it's easy to understand abstract person if you're not a victim but outside observer. Imagine you say to friend who needs your help: "I understand the man who stole from you because he was starved". Or that: "I understand that scumbag who raped you because his wife ran out on him and he wanted to blow off steam". Only most hard-hearted person can say that.