It’s like being invited to a party in someone’s house. One person starts smoking in the house. Sure, one person is no big deal. Then another person lights up because someone else did, and hey, they don’t have to live there tomorrow. Before you know it, 5–10% of people are smoking and making it stink for everyone, but it’s fine. They’ll stop eventually, and it’s not like you have to live there.

Unless someone stands up and says "no smoking in the house" ... people are going to keep smoking.

> Unless someone stands up and says "no smoking in the house" ... people are going to keep smoking

Sure. But if if someone says the house will burn down when the first person lights up, and they’re ignored, and it doesn’t, that doesn’t help. Most importantly because it isn’t true.