No offense, but a very high degree of irrationality is to consider yourself to be rational. A good excuse would be if you are very young. Your characterization of drug users as unintelligent and with no interest in higher ideals merely demonstrates that you've had almost no contact with them, thus it is highly irrational for you to have an opinion on them. They are doing things that are bad for them and are therefore stupid? Coca Cola is a diabetes inducing poison, yet people drink it and feel good about themselves. Some will eventually get so sick from it and similar things they consume that they will go blind or lose a limb. Worse yet, others will consider Coca Cola a wonderful business and buy stock, which will go up. Coca Cola will continue to expand and improve, causing more havoc on society, raising the cost of health insurance for everyone. Stupidity as a way of life.

Stop referring to people with a problem as "such people", it implies there is something inherently wrong with them. There are a lot of people that have strong tendencies to addictions, but there are also a lot of them where a bad break or two pushes them the wrong way. There's a lot that can be done with education and prevention. How much of the now unnecessary police funds were redirected for these and other measures?