I'm way out of step. I wear mine in remembrance of all those who fell (especially those in the fighting services who were killed in action) but also as a sign of respect to all of those who volunteered and served in pretty well any capacity - even if they were lucky enough to survive the experience. Both of my Grandfathers fought on the Western Front in the Great War, and both survived it, though being gassed (and wounded badly enough to be hospitalised about a dozen times) meant that the remainder of my paternal grandfather's life was short and painful and a Military Medal was no real compensation, and I wear my Poppy in memory of them. And of my Dad, who lost his front teeth when his Lib crash-landed on Sumburgh, but who then lived for 64 years after VE Day, seeing action in several small wars thereafter!
And because it's ok for the Poppy to mean different things to different wearers, we really don't need white ones.