Not many people can afford a McDonalds or Subway or Postal Annex franchise. Besides that, if you can afford one then you work your butt off to cover overhead, expenses and have employees who make minimum wage (because that's all you can afford to pay them). And with a franchised business, you might make $50k the 1st year, if your lucky.
Network Marketing is great for people who are motivated and will treat like the business it is rather than the hobby it's not.
Do your research, find a good company with a consumable product (mine is a healthy dark chocolate) that provides proven results. Develop your own testimony from using the product then share it with others when given the proper chance. Many will like the product, many will like the business opportunity and many will pass on both so just move on!
Good luck!