This isn't an area I'm an expert in, so take this with a grain of salt, but my understanding is that one of the symptoms of depression is the inability to feel

This isn't an area I'm an expert in, so take this with a grain of salt, but my understanding is that one of the symptoms of depression is the inability to feel certain emotions, and that antidepressants will in some cases restore your ability to feel those things. (The reverse may be true for some people as well, but it's not generally true that the purpose of antidepressants is to make you numb to your problems.)