Husband doesn't want to do Valentine's Day this year

My husband told me today he doesn't want to celebrate Valentine's Day. He said he can't emotionally handle anything else and just wants the world to stop. He took some vacation days off work because he can't handle things right now. A lot happened but one of the main things was his dad died which I don't understand why he cares. He was raised by his dad but they haven't talked in 6 years because his dad BEAT him his whole life. He just wants to lay in bed. I'm just feeling bummed right now. And I tried to talk to him about how I feel because it's like he's letting life get in the way of us having a nice day together but he doesn't want to talk about it

I'm not saying how he should feel about his dad's death but this man beat him every day. He hates him. Why care that he's gone?