I'm considering this, truthfully. My kids are grown and my wife has a job, a car, and I'm gonna leave the house to her. All the kids are grown and a few live with us. I do have a 401k, but she has not helped in putting any money away for retirement. We do not share any investments.

Before I do this, other than lots of cash I have started to squirrel away... what other considerations do I need to have about this plan?