Here are some things I've observed in todays world:
1. A good tractor is easier to find than a good wife
2. A good tractor is cheaper to maintain than a good wife
3. If you are fortunate enough to have a good tractor and a good wife there will be someone trying to take both away from you.
4. It is cheaper to get rid of a bad tractor than a bad wife.
5. A good wife is priceless.
6. A good tractor may be priceless
7. A good wife and lots of good tractors is heaven.