Lacking purpose for creating own business

Hello,

so a short introduction of myself:
I grew up in a very successful family, my father being an entrepreneur.
So money always played a big role.
I finished high school with very good gradeds, so I could go to an elite university.
Last year I finished with a degree in economics and immediately joined my father's business (Insurance).
Because my father put me in a pretty high postions form the start, I already make much more money than most people my age.

But still I always planned on to at some point start my own business, because I thought that is what an independent and successful person would do.
And as I now started to figure some things out regarding this, I realised that I only want to do this to prove to myself and my parents that I don't need their help and that I can be successful on my own.

So here is where my doubts come up: Should I really start a business just to prove something? Also it is unlikely that I will make more money than I already make.
I realised that my whole life and the decision I made (working hard in school, go to an elite university and sweat my ass off, join my father's business) were basically just so I can meet the expectations of my parents.
Shouldn't I just take the comfortable way and make money from my father?

Basically I am lacking a kind of purpose right now. Kind of fell into a hole.