Schooling to become a pain specialist and comparing to Psychiatry?

I can't find anything on pain specialists aside from anesthesiologists, but I did find that most specialists make more than 200,000. As for comparing the two jobs, they both seem to take at least 8 years of schooling and residency, both are very well paid, both consume a lot of your time, and both will be fun/interesting if you like said fields. As for easy...you really think a job that requires at least 8 years of education is going to be EASY? If you want easy then be a cashier and never look in the direction of medicine or psychiatry again.