Presumably because we live in such an anti-"drug" climate that taking on this type of research could have a presumably negative impact on their careers; not to

Presumably because we live in such an anti-"drug" climate that taking on this type of research could have a presumably negative impact on their careers; not to mention the extra effort to get something like this approved. I don't think the general cultural feelings surrounding hallucinogens has changed so much since 2009?