To my mind what really matters is: do you love what you are doing. Ergo the goal is to figure out: What do I love?
How to do that? By doing internships and gain experience! I did 4 internships at companies from small to huuuge till my graduation. When you, like me, after many internships at companies of different sizes and sectors still have not found a job that you love - then you should think about working at a startup or even founding one.
Well, I don't want to generalize things too much, but when you are a creative mind and have ideas and want to make them real, then a huge company is the worst place to start. They lure with self-fulfilment, but more likely they suck out your potential. The questions you want to ask yourself in the morning should be like: Am I intrinsic motivated to get up now and give my best till midnight+ today?
Since I founded my startup it is the first time in my life that I have this feeling and I wake up in the morning and really can't wait to get to work and get work done.
Achieve that and your decision is made.