Trinity, that's the thing; know what you're getting into.
And you're right about there being other fields in medicine desperate for staffing also. Physical therapy, which can be either facility or home based, will probably be a rapidly expanding field because--dare I say it-- we're all getting older and these parts wear out and get replaced, and a friend who's an ortho nurse in the OR, says Medicare is having knee replacement patients out of the hospital 3 days post-op and hip replacement patients out in 4 days (or vice versa), probably to a rehab facility. They need to get rehabbed somewhere, although I have read a newspaper article recently that somewhere, hidden in the new prescription drug bill, is a provision that may limit the reimbursement for rehabilitation of some of these patients.
The one great advantage I had having worked as a nurse was that I have been able to look after and care for my folks as they grew older and infirmed, and that has been important to me. Families, going forward, will have to bear a greater burden of responsibility in caring for their aged members as the money just isn't going to be available to provide social services through governments, either state or federal.
Sometimes you take paths in life that, knowing what you know now, you'd not take again but realize there may have been a reason for it that beyond present understanding. My advice for Worm was what she got out of it; just investigate thoroughly a potential field of study and try to choose something and live well.