This is a strange defense. You are basically defending an addiction by saying that it is better than smoking crack or doing heroin. That doesn't really defend your addiction, it is just comparing it to other things you could do that would be even worse.

I don't really care if you smoke or whatever, it is just rather expensive in the short term and potentially outrageously expensive to the point of bankruptcy in the long term. Also there are shorter term health implications that kind of suck as well. It is certainly not a good investment.