My mom does transcription too. Except she works at home so sometimes if she's really tired or sick or something, I make a little extra money by doing one or two tapes.
I remember your mentioning that, and that you did work for your mom.
I've been in transcription for 20-plus years, and I love it. Never does a day go by that I don't learn something new.
The field will change quite a bit in the coming years, with voice recognition and such, but it's a good and interesting profession.