After my mom died, I'm going to hide the inheritance from my siblings.
Why? Do you think it is fair to hide the inheritance from them?
Yes, I want it all to myself.
Hiding inheritance from your siblings is selfish. It is supposed to go to all of you, not just one person.
They won't notice that it is missing until they are all dead.
Just because they won't notice it doesn't mean that it is the right thing to do. Won't you feel guilty for hiding things that belonged to them from them?