I live in the NE and I hate snow.
It 's pretty for about three seconds and if you blink you missed it. All the songs and pictures in the world can't make me like the stuff. I think that over the millenia the general public has been duped into beliving snow is nice and pretty and soft and blah blah blah. After the first oh! how pretty! comes the truth, if I don't have to be in it, shovel it, drive in it, scrape it off the cars, soggy boots and cloths.
So I really don't think the positives outweight the negatives except in one important area. The ground needs the water from snow to replenish the aquifers that hold all the drinking water we use.
That's that in a nut shell. Sorry for the rant but I needed to clear the air about how much every body really likes snow.
I hope you get your wish for a white christmas and you can enjoy it in AZ.
peace