Remembrance Day ceremonies often include memorial services for fallen firemen and police, so that answers that. As for why you should wear a poppy? Well because it is a way of not forgetting that the rights and freedoms we enjoy were fought for and cost millions of lives. It not only honours those who died for our society, but reminds us our freedoms might demand sacrifice from us, or our sons and daughters.
It is darkly funny, but comments like yours (and like the joking? admin's) only underscore the need for Remembrance Day; since by your question it's apparent you clearly don't understand the significance of the day. I mean, imagine someone saying they'd prefer to be living under Japanese occupation...with the perks and freedoms we enjoy. Yes, and Jews could have looked forward to driving mercedes under Hitler.