[briandear]

No it’s not “dangerously inflexible” — Coca Cola can be any particular vice for a culture. The point is that in my culture, ice cream and Coke are not “good” for you, but they make many people happy. You can find similar “bad” things in every culture that make life worth living.

[Retra]

You could conceivably use "who wants to live in a world without Coca Cola and ice cream" to justify the mercy killing of people who live in a society without Coca Cola and ice cream. So why even condition things in such an absurd way?

>he point is that in my culture, ice cream and Coke are not “good” for you, but they make many people happy.

If the point is that vices can do more good than harm, you can say that. You don't have to use phrasing which suggests life would be valueless without those specific vices. The inflexibility is that not even your own life would be valueless if you lost them: you could easily find other vices to amuse yourself by.