The ultimate reward of your creativity, sacrifice, risk and investment should be the successful sale of your business.
Whilst passion is vital, purpose is important. Building your business today in such a way that will enable you to successfully sell it in the future means starting with the end in mind. 94.6% of businesses started never get sold. They never grow to the next level but remain in survival mode.
There is no reason why over time your business should just survive. Your purpose from the start should be to build an Asset of Value.