How are antidepressants expected to make you feel?

Decrease anxiety: Antidepressants don't make you feel good in major depression, they only take away anxiety and negative emotion, but they don't make you happy. In bipolar patients, they can cause "switching" and bipolar patients stop feeling depressed and can become manic.

Interesting question: Antidepressants can help manage disabling symptoms of extreme depression and anxiety, like apathy, poor energy, sleep & appetite disturbance, panic attacks, etc. It's not like turning your feelings on -- nor does it make you "happy" [despite tv commercials]. Doctors try to optimize your treatment so that you're as free of both symptoms and side effects as possible. Healing is a journey though.