This is an extremely personal question. The business that excites me would bore 99% of the world, and same goes for you. If you don't already have an idea what you're excited about, just put the money in VTSAX.
It would bore 99% of the world, but that still leaves something like 75 million people who are interested and I would wager a decent number of people here would fall in that 1%.
I’ve found that even seemingly dull things can get very interesting when you get deep into them.
