Wolfgang Schwanke writes:

Mental or physical pain during withdrawal to the point that you can't
lead a normal life without regularly taking the drug.

What causes mental pain?

An obsession is not addiction. Anyhow, there's little obsession
involved. The majority of people who drive their car after having had a
small glass of beer think nothing of it, especially not that they're
risking their lives. The fact that you might think differently is
irrelevant to them.

The fact that some of them die in consequence doesn't seem to be relevant to
you, either.