it's amazing that people don't even realize that they're making it harder on others. They were never taught (as children) to be empathetic. Most peoples' worlds revolve around their own problems, emotions, and thoughts, so it's rarely personal at all.

我不懂/不明白為什麼他們為了一點小事情就動怒。

“they become angry in just a little thing .i dont understand.” maybe you think just a little thing，do them maybe different。 know the reason，then decision。

They want to get hurt..