Assuming you have money left over To support a family?!?! Really?!?!
I'll give you a couple pointers. You may not drink alcohol or do anything for that matter, but I find it odd that people tend to attack pot smokers.
For one, regardless if you drink or not, did you know as if 2012, over 2,000 people die a year from alcohol poisoning? Did you know most are between the ages of 35-64? Did you know most of those deaths are caused by binge drinking and most often is around 8 drinks. EIGHT DRINKS!!!
Why do I talk about alcohol when you clearly didn't bring it up? Because I believe that if you actually feel like you're against pot because of other people's safety, health and well being, then maybe you should direct your energy and attention at something far more serious. But maybe you didn't because alcohol is socially accepted and what you've been taught by society is that a little wine is ok since Jesus turned water into wine. And if helping is truly your motivation (which I doubt it is since a snide judgemental remark about family came up next) then you might be able to help more people redirecting to alcohol. Oh, and I drink alcohol by the way.
But when you said "finally, assuming you have money left over to support a family", are you insinuating that people who smoke pot buy pot instead of things for their family and children? That statement clearly exposes the cluelessness you have regarding marijuana, so I'd suggest in order to save face that maybe you don't jump in conversations about the topic in the near future to prevent you from looking like a complete buffoon.