Hey! I want to teach English people and it has nothing to do with how 'easy' it is to teach. I want to teach English because it's a fascinating subject. Studying a text and then studying the themes, messages, reasons for it being in the text etc. Being able to look at the messages from everyone's perspective and how it is portrayed in their mind.
Then there is the fact that you are teaching students skills that they will use their whole life! Grammar, speaking and writing skills, an understanding on how to interperate different forms of texts etc.
It might seem like it would be 'easier' to teach English because you don't have as much to remember in terms of knowledge but that doesn't mean that the teacher does less work to prepare classes. It doesn't mean they put in less work to mark assignments/SAC's. Not to mention, there are things to remember like quotes, themes (as mentioned above) and being able to have a strong and clear understanding of a text can be a very difficult thing. Science/maths teachers have quite a simple job in that they can remember the things to teach and then teach it but to be an English teacher you must be able to have a clear and strong understanding of a text. It is a lot more complex with an English teacher.
As you can tell, I'm only a little bit excited about the concept of teaching English

And by no means do I think it's an 'easier' subject to teach.