I feel like I'm one of the odd ones out where I enjoy my job at a large company that offers me pretty much everything I could want at the moment

I go home, relax, read, hangout with the family and work on really interesting open source & side projects .. I can't imagine how I could be much happier ..

IMO if your goal is to start a business start planning things out and take the risks you need to only you have to not just when you can .. which is very situational .. i wouldn't just go and quit your job if it's not immediately necessary on a whim due to advice from a random blog.