I'm currently in the process of writing many questions like this for my game Devil's Advocate (link above). Each polarizing question should make members of a group think hard about whether they agree or disagree. Some other examples:

-Personal drones should be regulated. -It's good for young kids to have tablets and phones. -Over 50% of shopping malls will be gone in 5 years. -Losing your wallet is worse than losing your phone. -Traveling back in time would be better than forward. -Winning the lottery would be better than living to 200 years old. -80s fashion was uglier than '90s. Better to be missing an arm than a leg. -Most food expiration dates are bogus. -Parents should be allowed to choose the gender of baby. -College athletes should get paid for playing. -Neckties make less sense than high heels. -Cursive should be taught to elementary school students.