I came to a point, that life is still worth living, even after getting shot with injections.
I still enjoy food, almost like before and I still enjoy masturbation from time to time, although not as before.
The rest of so called, "little joys of life" are still missing such as joy from video games, joy from conversation with people, joy from watching videos and movies, joy from good thoughts and the most important for me, magical feelings from life (like waking up and staring at nature through the window for example).
I believe it will come back, the brain has re-adjusting to do after it's homeostasis as been interrupted.