I'd rather be smart, what would be the point in just being some stupid person with loads of money, wasting it on luxuries like sport's cars, hot tubs and prostitutes and doing absolutely nothing for the world, I'd end up being some soulless zombie, completely unsatisfied and bored of everything.
Being smart and from a poor background, you could use your intellect to get into a good university, help people and actually do something meaningful in the world, rather than wasting your life on materialistic and ultimately hollow desires.