The answer is simple. Because
1. SFI provides you so many extra benefits than other similar businesses. If you are not sure what are they just have a look at the link below.
It gives a complete list of extra benefit u get in SFI.
2. 2nd measure point is It is a very trusted site with so many real people earning huge money. It has a open forum where u can discuss any topic.
3. 3rd point is Here you can sell any of your old stuffs if u r not a seller but just want to sell ur unused stuffs, Sell ur new products if you are a seller. The most important fact is selling is FREE here. Also more than 100000 members promote ur product.
If you think u r serious about getting retired early or want to spend your time at home with earning huge, Here you go.
Just click on it and sign up. Its free for life long.
Go for it as there is nothing to loose.