Lester; it is important to always remember that compromise is an essential element in every relationship.
In this situation, I would recommend an 'if/then' statement, which theoretically always seems to facilitate the use of mutual compromise and agreement, seen below:
If you are able to procure a very economically sound flamethrower tool (aka - responsible family investment), then your wife will be free to continue to nag you for an additional X amount of years.
Now that sounds like a win/win if you ask me.
By the way, you will find an excellent tombstone engraving company
HERE. They come very highly recommended, so I'm told.