Thanks for your input. But believe me you can cultivate other hobbies and still contribute occasionally. Also you might pick up a hobby or two just by flipping through the Movie, Politics, or Theater section. But good luck in all that you do.
Scientists depend on the honesty and the reliance of their patients. Unless a patient drops by a practitioner's office every day and takes the Truvada it would be hard to be absolute about any study. It is always good to have data but studies can't be sure unless the practitioner is absolutely sure that the client has taken all the doses. The first thing I noted in the study that the article was about is that it relied on the word of the client.
I think that you will feel great. Know basically what you want as far as the haircut goes (unless you are like me and there are not many options) and just lay back enjoy the shave (assuming it is going to the skin). Enjoy.