Disclaimer: These are obviously over generalizations and don't match all individuals.

Because it's not the age people are against, it's the generation. The boomer generation had some of the most prosperous years in American history and wasted them. The general idea is you're supposed to make the world a better place for the people that come next, and they did the opposite. They cut social systems, defunded education, let public transportation die, outsourced everything, and lined their pockets with investments in oil that are killing the planet.

I won't blame someone for being old, but I will judge them by what they did and supported during their life. And as a whole, the boomers have a lot to answer for.