My elderly father moved in with us recently and has Alzheimers. My sons both told DW and I to not plan on either of us ever moving in with them. Now, I love these boys, their families and they have done well for themselves with one being a dean at a university and has a doctorate and the other who is well placed in a cable sports network, but if they have expressed that they are not interested in being there for us, then they have zero need to know how much we have. And if either ever asks for a dime, I'll let them know we are needing everything we have saved in order to never be the burden on them that they think my dad is for us.
In other words, I'm saying that you better really know your kids. If you EVER are in a situation where financial responsibility is handed off to your progeny, what you imagine your kids would do may just be that; imagination and not reality. I have a trust fund and I spoke to my estate planner to set up all the arrangements so that our money will be used to take care of us if we can't make financial decisions any more.
Money ruins more relationships than everything else combined. I'm not going to let that happen with our family by spelling out what I'm worth. All I'll tell 'em is that I'll have enough to be financially independent so they don't need to worry about taking care of us.
They know how to contact the estate planning attorney if and when they need to.