Maintenance is required to keep the machines performing. Doing maintenance today is cheaper than tomrrow
Being in maintenance you are challenged every day with new or different task. I like that it keeps you in learning mode. The issue does not have to be with machine it also could be a personnel issue. I have learned that working with your coworkers in a team can resolve the issue much quicker and easier than working your own, The hard part of being a manager is to finding qualified technician or holding on to someone after spending your time, money and energy to train someone. Most enjoyable thing for me is learning a new thing about the maintenance field.