[offwhite]

"reference to such possible motives prior to establishing the claim as unsupportable are the rankest sort of argument ad hominem."

I agree. But the only thing I'm establishing is the possibility that your agenda is interfering with your argument.

[ConservingFreedom]

the only thing I'm establishing is the possibility that your agenda is interfering with your argument.

It's also possible that you have an agenda that is interfering with your argument - such as, perhaps, a fervent desire to keep marijuana away from your kids and a mistaken belief that the general marijuana prohibition furthers that end.