That is a simplistic association.
You could just as easily state it like this: "In my opinion, I have seen way to much suffering from drug addicts to believe it's a choice. Why would someone choose a drug addict's lifestyle, knowing the incredible array of problems facing them?
People do all sorts of illogical things. Look at all the women who stay with abusive boyfriends and husbands. They do so out of choice even though there is alot of suffering involved.
I can speak to this issue.
When you are not yet addicted, drugs are a LOT of fun.
But when you become addicted, you no longer have a choice. You must do drugs. Consequences no longer matter. Jail, divorce, financial destitution -- none of them deter you.
Now, there is a way out: If you surrender your drug addiction to your Higher Power -- that is, if you realize that you CANNOT FIGHT the addiction, that there is NO WAY for you to beat it -- and if you call on your Higher Power (in my case, G-d) to fight the battle for you, and instead concentrate on using the tools of NA to stay clean JUST THAT MOMENT -- you can beat drug addiction. I have seen countless hundreds of recovering addicts with 13, 17, 25 years clean.
But I digress. The main point is, once addicted, you no longer consider consequences. The only important thing is to get drugs.