First tell them that SFI is a work at home business. It is about accumulating VersaPoints and duplication. Recruitment of people.
Explain that SFI is a business not a non-profit organization that just gives away money. Like all business, you have to invest and work hard to promote and grow it.
Then talk about the benefits of working at home.No required hours or time to follow, low cost and SFI provides a lifetime of earning with minimal investment.