"I can replace one addiction with something safer."
When alcohol or drugs are removed, it can be tempting to turn to another substance, behavior, or compulsive activity to fill the same need. Gambling, compulsive spending, excessive work, relationships, food, or other behaviors may temporarily provide relief without addressing what was underneath the original addiction. Recovery involves learning healthier ways to manage those needs rather than simply moving the problem somewhere else.
"I'll never use again because I know it could kill me."
Fear of the consequences can be a powerful reason to stay sober, but fear alone doesn't necessarily change the underlying relationship with a substance. You may know intellectually that using could be dangerous while still remembering that alcohol or drugs once provided relief, pleasure, escape, confidence, or connection.
That's why recovery requires more than remembering the consequences. It requires understanding what the substance did for you, what needs it appeared to meet, and how to meet those needs differently.