I haven't even try buying drugs with the usage of Bitcoin because although it is a currency used to buy whatever the holder wants, there are still limitations for the usage of this currency. I admit it to myself that I will not be using Bitcoin for such thing as drugs because there are lot more important things that I need to spend and for me, drugs are just a waste of money and can ruin ones life. Also, if the international government will ever discover that Bitcoin was used for easy payment on buying drugs, surely they will destroy and stop the usage of Bitcoin to stop the negative actions done with the presence of it.

Do not ever buy drugs using bitcoin. Never use drugs to buy bitcoin. Should be food or home or using your purchase so you can use bitcoin. We do not abuse bitcoin as it is given satin for use in the right way and right thinking. If the drug just disables your life when you enter the drug.

Buying drugs with bitcoin payment? Never, that would be needed a transaction fee I think. But this may be the good idea for those who are using illegal drugs. 

Never buy drugs because it is not good for my next day so i will use bitcoin for the good thinks like open a new company or for buy a house

Most of bitcoins value still comes from speculation but yes, there is a growing market of inelastic demand from a circular economy of users who need bitcoin to survive.

Unfortunately, Bitcoin hasn't eaten much market share from the US dollar with arms trading and terrorism but it has been slowly eating away market share in these categories:

Drugs, gambling, prostitution, ransomeware, money laundering , capital flight.

This makes bitcoin somewhat of a blackmarket ETF where state governments heavily subsidize the value and premium of bitcoin by introducing regulation and laws which make bitcoin a valuable tool to route around these restrictions.

Therefore the best way to destroy much of the value of bitcoin is to make everything legalized and for all governments to become anarchistic. Thus Bitcoin is a hedge against anarchy and if you think governments and laws will continue to exist bitcoin has a bright future ahead.

bitcoin for drugs is possible.  Druglords soon will be collecting huge number of btc.

I think those who need to buy drugs do not have to use bitcoin, it can certainly be more convenient for them. Those who need to buy, they can buy them and usually money.

I think buying drugs with bitkoyn is a bad choice. bitcoin is created for some benefit. such as the ease of the various financial transactions that we do. bitcoin use it wisely, use it for something useful.

In some countries, drugs activity is illegal and you can be catched by the police if use or buy/sell it.
Example my country, have a payment method to keep safe and anonymous activity in criminial activity as Bitcoin is neccessary.

What kind of drugs? For me if bitcoin use in buying drugs for medical health it is good since it will make the process faster and efficient.
But if the intention is to buy illegal drugs such as cocaine, marijuana and etc. the company of bitcoin and its management will not tolerate this act and put those people in to jail and punish by the government.