These are some of the questions that I commonly field.
I teach because I like to. After five years of experience, I am still not sure how 'noble' the profession is but I can safely say that it is at the very least a highly enjoyable one. One gets to meet all sorts of intelligent and curious people. In my opinion, the popular lament "Today's youngsters don't have an iota of curiosity or intelligence" is downright absurd. Many is the time that I've met students far superior to most teachers I had (in terms of intelligence, knowledge and exposure). I still find it hard to believe that I actually get paid to read and to teach.
As an engineer, I like to analyze ideas and information. That's about as 'engineeringsy' as I get.
Yes, it is a 'cool' job. In summers, it's hot and in winters it's even cooler. If you want to be a teacher you have my fullest support (only moral, that is). Be warned however that teaching any subject that you don't fully understand is like navigating a minefield without a map - you never know when you are going to blow yourself up. It really helps if you know what you want to teach and if you have a rudimentary idea of what the subject is all about.
I never crack the same jokes. That's an unsubstantiated accusation made by people envious of my charisma, my charm and my modesty.
It is true that most of my comments are directed towards engineers. I would have thought the reason was fairly obvious - being an engineer, I feel a natural camaraderie with engineers ( except computer engineers - the term computer engineer is an oxymoron methinks). And it's not ridicule - it's just banter.