Most people who get depressed get through it without any special intervention, while some of us require a period of time on medication and/or counseling. But we still don't know enough about depression to figure out who will respond best with medication vs counseling, or for how long treatment will be required. That's one of the reasons for tapering - to give you time to adjust to the lower dosage, both in terms of letting your body adjust to the biochemical changes, but also give you a chance to gauge how you're doing emotionally and decide whether to continue tapering, stay where you are, or even go back up to a previous dose.
It sounds more like you weren't at a point where you could manage to get off the medication completely, and maybe you should have stayed at either your original dose, or one of the steps along the way for a while.
But - and this is the key - if you are working with your doctor, and you're both comfortable with the plan you've come up with, then that's what you should do.