Learning statistics has been a fundamental part of the development of my critical thinking. Being able to understand that 'many' is a weasel word and why (see my other comments). It makes me less susceptible to things like yellow journalism, and makes me require more rigorous arguments to sway my opinions.

Statistics gets a bad rap, but it is far more important for day-to-day life than people give it credit for.

Math is not important at all for the vast majority of adults today.

This is just plain not true. I can't speak for calculus, but in addition to what I mention above, there's plenty of day-to-day need for math by the general public - money handling skills, for example, are something that almost everyone should have.