For prestige and recognition. To get rich. The most pervasive characteristic of entrepreneurs is that they don't like working for someone else. They like to call the shots themselves. They also tend to be extroverts who crave recognition.
Money is nice but of secondary importance.
I'd learn from my mistakes and start over. I'd be very shaken but would eventually recover. Many if not most successful entrepreneurs have started more than once. Failure is a very real part of small business. It is essential that an entrepreneur be resilient and able to bounce back.