What kind of career can a degree in zoology lead to?

I have a degree in Zoology, and couldn't get a decent job. I did a PhD, but couldn't get any research work afterwards. I'm now in my mid 30s and regret picking this subject as it has been a barrier to getting pay worthy of a graduate. I suggest picking (or moving into) a subject that gives you more opportunity, such as genetics, molecular biology or microbiology.