Why do I feel like I don’t care???

So one of my parents was selling a house and it has fallen through, they are moping around and acting like it’s the end of the world. Why is this? Surely there are worse things that can happen to people? And then when I tried to be nice and go round I was told not to cause they needed time out however that didn’t apply to everyone that just applied to me as my aunt went round anyway. So now I’m just like move on you can’t fix it why are you even bothered? Please help me I feel as though I am missing something here