If a corporation is run properly, you can protect yourself from today's litigious society, insulate yourself from lawsuits, and make yourself virtually judgment-proof.
The ownership of a corporation can be easily transferred. The corporations life is not dependent upon its members. If the owner dies or wishes to do something else, the corporation can still exist with simply transferring the corporation.
Capital can be raised for the corporation through the sale of stock.
Retirement plans, such as a 401K, can be easily set up with a corporation.