What is the point of making payments over paying cash for MH?

[Nikki Closser]

John Fedro talks a lot about making  not only a cash offer, but also an offer for more money and making payments to the seller. (episode 75)

If you have the cash to buy the home, what is the point of that? It does seem that it helps with the psychology of “selling” if you offer a few options. But, is there any other point? Again, assuming you have the cash to purchase the home. 

Thanks!!