So from what you have read in this thread up to now you can see that if you plan on a career in engineering then yes you will need to learn a lot of math. That is just hte nature of the field. But the real question is what do you really want to do? We all end up doing some things that we do not particularly like or want to do. That is just life. If you spend 4 to 6 years going to school are you really going to use that education to forward yourself into the career you want. The one thing that way too many people end up doing is getting into a job that makes them miserable. You have to do something that brings out your passionate side so you don't lose interest. Engineering just clicks for some people naturally. The rest force themselves to love it because of the money spent on the education instead of actually loving what they do.
Obviously there are some smart people on this site who have done well for themselves in this field. So take in all of our information, but you have to decide that engineering is truly what you want to do for the rest of your life. If that is your decision then you will fight to learn the math your way. Don't let some moron change your mind because he is bored with what he does. Maybe your teacher is a great engineer, but just a lousy teacher. Try talking with him/her and maybe you will help them realize that they need to make a change in the way they teach. Think positive and positive things will happen for you.