Welcome to the forum. I chose mechanical engineering with a specialty in machine design because I grew up around it and inherited my father's fascination with all things mechanical. I wanted to know the reasons why certain concepts work, and why some don't. I graduated from college over 30 years ago. Since then I have treated every day as another opportunity to learn and have not regretted a minute. If you approach life that way, even the mistakes and failures have value. They are tuition paid in the school of hard knocks.