My mom was a Spanish major/Spanish teacher, and she was a great one. I never thought that I wanted to be a teacher, because all I envisioned was classroom teaching, and this didn't interest me. I got a Bachelor's degree in Spanish Language and Literature, and my original goal was to be a social worker with Spanish-speaking people. Then my emphasis shifted after college and I worked in international business for a couple of years. I actually switched careers after that, but always used Spanish for enjoyment (sociallly) and tutored part-time.
Years later, I worked part-time for a counseling agency as an "inhome worker" with Hispanic families, assisting therapists with family therapy. I have also done some medical interpreting, which I really enjoy. And now I am a teacher! I enjoy sharing my love of the language with adults who want to learn and with students who are struggling to crack the code of the language.
In general, I would say that if you don't want to be a teacher, it is important to develop another profession, such as doctor, nurse, social worker, attorney, etc. In my job search experience, it seems that having a professional skill AND being bilingual make you more marketable.