Ayahuasca Retreat is not easy to do. You have to travel and stay in a foreign country for a few weeks, you have to pay the expensive price, and sometimes it's hard to find the right place that offers Ayahuasca Retreat. The problem with this is that it’s not easy to get yourself to Peru, and if you do make it there, then you have to deal with the intense jungle environment.
Moreover, Ayahuasca Retreat is very expensive and not everyone can afford to go on a retreat.
There are many people who want to try Ayahuasca but cannot afford it or do not have time to travel.