Never.
Seriously, I don't give a flip about that. I don't understand why there are some people who are using marijuana as an attack against posters. This is an another example of the annoying liberals of this forum who promote "tolerance" but can't tolerate those who don't have the same way of life than them.
I think many people are half joking on not smoking marijuana, but I do think that for the people are argue with people who have not tried marijuana, or have and didn't like it. We shouldn't make them feel unaccepted for any thing on any issue. Remember we all come here for political reasons, but it doesn't have to be a mud sling on either side. Personally I have never tried marijuana, and probably never will, but that doesn't mean I do not support decriminalization or legalization. After reading the facts on health effects of THC and other aspects of the drug, I just have decided not to use it for my personal beliefs. Although, I do not discourage people who have read the facts, and want to smoke or ingest the drug, for their needs is fine by me.