Social media companies are making products that are useful for adults, helping them to find information, jobs, friends, love, and sex; making shopping and political organizing more efficient; and making life easier in a thousand ways. Most of us would be happy to live in a world with no tobacco, but social media is far more valuable, helpful, and even beloved by many adults. Some adults have problems with addiction to social media and other online activities, but as with tobacco, alcohol, or gambling we generally leave it up to them to make their own decisions. The same is not true for minors.