There are many reasons why you might want to put your house in your wife's name only,. Some of the reasons include estate tax planning and asset protection.
You should consult with an estate planning attorney who can review your entire situation and come up with a plan that provides for your needs,.
A wise attorney who mentored me many years ago, said that "The best asset protection planning is a good marriage". Of course, he said that before his own divorce!
You really should speak with an estate planning attorney about the best way to structure your assets for protection and for the future. Consider, for instance, what would happen if she pre-deceased you. Despite your age difference, we don't have a crystal ball to tell us what will happen to us and our loved ones. You might well be setting yourself up of costs and taxes you had not planned for.
This answer does not constitute legal advice and does not and is not intended to create an attorney-client relationship. The law may vary depending on the state in which you reside. It is intended only to give some direction in which to seek assistance.