I did. It was an analogy. And the strength to which you deny any similarity of the two only proves how relevant was my argument.
You strongly deny any desire to partake in pleasures that some might consider beneficial to your development as a mature individual. Yet this is the basis for your argument of how you should treat your brother. You're so strongly convinced that your opinion is the right one, you're willing to rape your brothers consciousness with the ropes and clamps of psychotropic substances. Whether it be BDSM or forced intake of drugs, the effect on the receiver is the same: a violation of trust, and a forced invasion of will.
You describe your brother as having a distaste for marijuana, much as you do for BDSM. If you were tied up, suspend from the ceiling and small bits of pain were forced upon you, how would you feel? You call me a freak. What would your brother call you? A loved one?
I too was an AP student in high school. I remember quite well how many underdeveloped and emotionally retarded students were in those classes. I think you should reevaluate whether taking AP classes is a sign of maturity.