Well I like seeing christmas stuff about and more importantly so do my little brothers - after all this time of year is way more fun for them. Just because there is commercial stuff about doesn't mean you have to go and buy it.
But when the weather is dreary and it's always so dark, seeing santa on your bottle of coke can still make you smile. If it were up to me I'd keep the christmas tree and lights up until February at least. It cheers people up, makes them happy and most importantly of all, the shops are FULL of Terry's oranges.
If you don't like christmas so much then fair enough...but keep your shouts of bah humbug to yourself, some of us are still kids at heart