The following are some reasons to start a restaurant. the reasons should be categorized as 'great', 'neutral', 'terrible' - 

It will provide food to people
Potential to become a millionaire
Help you follow your passion
All your savings will go into opening it
You dont know how to cook
The world needs more farm to table services
You may be able to build a career out of it
You will enjoy it
You will lose your job
You dont have money to open a restaurant