Not quite sure what you're getting at.

Seeing someone you love addicted to something harmful is very sad.

Being addicted to cigarettes or any substance isn't really relevant here.

The point I was trying to make, is that these sales tactics exploit a feature hominids have developed which would have been critical for survival. In situations where a reward is uncertain (hunting) a gland in our brain releases a stimulant to help us stay focused and look for opportunities to improve the outcome.

It's easier to avoid a trap when you know how it works.