Well, that's a side-effect that comes up with SSRIs, even though this researcher who is funded by pharma companies is careful to downplay that:

> Other subjective side-effects are not usually considered by healthcare professionals, yet ‘blunting of emotions’ is mentioned by some people who take SSRIs, in clinic and on web forums. They report that, although they feel less emotional pain than before, they also experience a restricted range of other emotions that are a normal part of everyday life.

Emotional side-effects of selective serotonin reuptake inhibitors: qualitative study

This is the major reason I wouldn't take them. I'd rather look the devil straight in the eye than feel dead inside (my word for what I experienced).

So it's quite understandable that it happens. I found a tiny dose would take the edge off the most hellish emotions (like 1/10 of what they wanted me to take, and then only a couple times a week) but of course the doctor will never recommend that. They want to be in charge of how much you take.