You do get a sense of achievement when you do a good job and no two days are the same so it is gratifying but it isn't really a career. I've been in Ops off and on for 20 years and am now dispatching (for a lot less money) as there are no jobs around. I've been made redundant due to companies going bust 3 times and that's a lot less than some people I have worked with.
Depending on the size of the airline you can work up from Ops Assistant to Ops Controller to Duty Manager, but there isn't really anywhere to go after that unless you can get into the Commercial side.
Cheers
Alan