Yep, after a few seasons with the RSPB/county wildlife trusts, I decided it was better for me to not work in wildlife and conservation, but pursue them as interests.
I'd recommend any young person thinking about a career in wildlife/conservation to consider for a moment:
1. at the personal level, is an interest in wildlife/conservation better being exactly that - an interest, rather than a job? If the job becomes dissatisfying for any reason (conditions, salary, same mundane work [some conservation work is], lack of long-term security, etc), is this going to impact on your real pleasure in wildlife/conservation?
2. can you really see a long-term path of existence on mostly low-salary jobs, short-term contracts, etc?
3. can you make an equal/greater contribution as a volunteer while also having a real life? Volunteering is often not only productive in terms of conservation, but can be hugely satisfying, and gives the option to being more interesting as you are free to volunteer for whatever you want, rather than needing to take whatever you have to?
4. could you potentially achieve more by getting a normal job, earning a decent amount of money, then ploughing some of this back into conservation?
This said, full credit for those that do decide to stick at it and work for the conservation bodies.