After Aaron's wife died he was left with his son Jack and was now by himself, Hotch was depressed and sad he didn't wanna do anything but pushed himself because he was a workaholic, he worked all the time to try and forget about his wife dying. You started to get concerned about him but also Jack. If Aaron was always at work Jack wasn't getting the love he deserved, so you thought it was time to say something to him about this situation