Do you enjoy going that's the question? If you plan to enjoy your time in the SIM and you've prepped a big bag of questions for your hopefully competent instructor, then you're doing more than just box ticking yourself. I have always enjoyed the opportunity to expand and develop my abilities so have probably come away with more than just those guys who take a deep breath and just get it done and say nothing in class. The most interesting part for me is talking with the other guys and carefully listening to their stories.