I do not have any experience teaching special education courses, but my brother is special. I grew up going to school alongside with my brother and I can definitely tell you that if you become a special education teacher, you are greatly appreciated. My family and I always thank the people who have helped us. The career will be a challenge, but challenges are often exciting; as opposed to a repetitive job. I would also imagine there to be very high personal high reward in this career.
Hope this helps, Herman