I have only seen a psychiatrist once in my life and it was to receive a prescription to help with some struggles I was having while in grad school. What about you? 
I have seen one, a long long time ago when my husband and I were having trouble.  
Yes, they can be very helpful in times of struggle. I actually studied psychology in school, but never went so far as to want to become a psychiatrist.
I took psych 101 and would have loved to go further with it, but there just wasn't time with my program I was in.  I find psychology to be very interesting.
Yes, it can be a very helpful science for understanding how people think and work and function in their life.
Yes it is.  I think we still have a long way to go in learning more about certain psychiatric issues. I would love to see more done for those suffering with depression.
Yes, there is still so much to be done for those suffering with depression. It is so easy to overlook but can have deep negative affects on a person's life, work, health and relationships.