Overall, how would you describe your past experiences as an engineer using just one word? My choice would be: complexity.
It means that there's a lot in one thing, which is exactly how I feel about this profession! The word also implies tediousness and determination, both of which are there.
That being said, I make this thread in honor of alco and post this video to dramatically exemplify my feelings!
http://www.youtube.com/watch?v=RDF7QogcFmU