An academic career was my dream job while I was an undergrad, but it disappointed me later when I actually reached that goal. I'd say go for it if you feel it'll be rewarding, but don't stick with it out of stubbornness when it no longer makes you happy. There's more freedom waiting elsewhere if you don't shun the responsibility (in entrepreneurship). But just because it didn't work for me, it doesn't mean it's generally bad. Many people seem to be quite happy working in academia.