It is really a sweet bag and you can use it year after year for many years.
One thing you have to realize...you need to buy what you really love. There will be another bag and another bag...so what? Design houses will constantly make new ones to get you to purchase. Who cares? Buy what you love and continue to use it every year as long as it makes you happy. Yes, this bag may go on sale, but they almost always will. That is how it is.
Just some advice...buy only what you really love and don't worry. Walk with confidence with your bag...who cares how old it is? I have bags that are really old and actually, they get the most praise.
Have fun...enjoy the bag...don't worry about everyone else.