Reason for starting your business

Just a short post this week about the various reasons people have for starting their own business.

I 1st thought about starting my own business when I was about 18yrs old. I has always enjoyed sewing and thought it would be easy to just start earning money (I wish it was)
I was already working part time in a shop whilst going to college. Once I left college I found that I needed to start working longer hours so the business idea was put on the back burner. I was always saying I'm going to start my own business but never actually put it into motion. Then my nan passed away and gave me the push to finally start the business. My main motivation this time was that I wanted to make my nan proud of me even if she wasn't actually here to see it or tell me.
Over the last couple of years I have slowly started getting more customers and growing the business. Last year my dad lost his job and struggled to get another one so my money was paying the bills and it was a horrid feeling not knowing if we would have enough money. At the same time the place I work also started to let people go. This has made me even more determined to have a successful business so that I don't have that worry of where will the money be coming from, is there a chance I'm going to lose my job,etc.

So I suppose this post is really to ask what was the main reason/factor behind people starting their business?