I find the most enjoyable part about Mechanical engineering is collaborative you practice everyday to overcome on daily operation problems that is usually happens whether you're working into a facility or a factory or any maintenance-required place. being able to collect the knowledge and apply critical thinking, troubleshooting, trial and error approaches that is really make a difference between an engineer and a technician.
The satisfaction of a job well done.
Camaraderie/community feel of a high functioning team.
Feeling that you had made a difference while gaining valuable experience/skills that increase your professional worth.