Hi, Teets! Looks like everyone wants to put in their two cents, and I'm no different. We'll stand in line for a chance to take a swing at one of these powder-puffs.
Anyway, my point is, this forum, and many other evolutionist minded folk throughout my life, have always been adamant about pleading their case. Many say it's fact, and has been proven. They are always persistent in letting you know what they believe.
Wow! I want to live where you live. I can't remember the last time evolution came up in conversation. The only place I ever get to discuss evolution is here. Were you wearing a great big "Down With Evolution" button or something? :D
Is it necessary to promote evolution?
I don't know what you mean by promote. If you mean teach it, then yes, it is science, so it is taught in school just like all the other fields of science. Typically, evolution is 2 weeks of the school year in high school biology classes.
Why is it so critical people believe it?
It isn't critical at all that you believe it. Don't believe it if you don't want to. If it's against your religious beliefs to accept evolution, then don't accept it. As long as it doesn't cause you to do stupid things like deny your children visits to the doctor because the field of medicine is a co-conspirator of evolution, then more power to you!
The reason the creation/evolution debate is so visible is because of creationist attempts to restrict the teaching of evolution while promoting the teaching of the Genesis account of creation in public school science classrooms. If not for these efforts most people would never have heard of creationism.