Standard IANAL, or an accountant.
Personally, I wouldn't bother incorporating unless you have investors or creditors. Or if a tax person says it's in your best interests. You can blow a lot of money on lawyers and tax preparers for no good reason.
A corporation (or LLC) doesn't protect you from being sued. Anyone can sue you at any time for anything. If someone wants to sue you, they'll sue both you and the corporation. Even if you defeat the lawsuit, you'll still be on the hook for a big ol' lawyer bill.
Also, if you plan on borrowing money, a bank won't lend you money unless you have collateral. Until your company has assets, such as inventory, accounts receivable, publicly traded stock, a building, etc., anytime you want to borrow money you'll have to personally sign for it.