Do NOT stigmatize certain administration methods!
There are some people who drink alcohol or pop pills and refuse to smoke anything because it is not oral administration. They demonize smokers as ruiners of their lives.
There are people who smoke weed and refuse to snort anything. They feel that powder was not meant to go up your nose, and think snorters are bad people.
There are people who snort coke and refuse to IM ketamine. They are afraid of needles and classify it as "hardcore" drug use for addicts.
There are people who IM and refuse to IV because they think it makes you a junkie.
There are some people who refuse to administer rectally because they think it makes you gay.
It's all about opinion, and one method of administration is not superior to another in terms of permissability. As a harm reduction site, there is really no problem with promoting IV drug use as long as it's sterile IV drug use.