While I don't dispute your claim that Psychiatry seems to be a pseudo science, it generally isn't something that liberal arts students end up doing.
To become a Psychiatrist, one must first get extremely good grades in college (usually in the "hard sciences," like chemistry and biology), get accepted into medical school, graduate from med school and become an MD. Then they choose further years of study in psychiatry as a specialty (just like someone else might choose to specialize in general surgery, family practice, OB-GYN, nephrology, gatroenterology, etc.). One Psychiatrist that is well known in politics is Charles Krauthammer, MD.
Maybe you are confusing Psychiatry with psychologists (bachelors, masters, or PhD in psychology) or "therapists" (who probably have a college degree in something, but have taken courses in perhaps "Marriage and Family Counceling" and go hang up a shingle and open up for business afterwards.
PS -- I'm not taking up for any of these professions -- I don't actually know any Psychiatrists, psychologists, or therapists. Thank goodness I've never needed any of them. I just wanted to point out that becoming a Psychiatrist is not the end result of a liberal arts degree.
I thought psycologist often cross into psychiatry and give out drugs like candy?
I know a lot of psychiatrists who have helped people, including me.In fact it has changed my life enormously for the better.
Also, some psychiatrists are also psychoanalysts, which requires even more training. I do not believe it is a pseudo science, but I think we can all agree to disagree on this issue