It looks like you are falling for propaganda. When someone wants to purchase a car or a home, there's such a momentum behind the idea of financing that a customer who uses their own savings is viewed as odd... perhaps even a money launderer, yet it's perfectly normal.
I mention that because there's a similar momentum behind business financing. If you build software for a living, then you can build a new business with no overheads, no ties, no time limits, no favours, no budgets, no business plan and low risk. It's pure freedom to do what you want.