If I fall in love with a style - and this goes for everything from mascara to sneakers to bags - that means it's either going to be discontinued ASAP or it's already happened! The story of my life right there.
OMG Story of my life too. From Chanel Insolente lipstick to Chanel Narcisse blush to Balenciaga G21 hardware!
OP - buy what makes your heart sing. For example, I love the Pandora, it probably will not be a classic, but I can see myself using it for the next few years. The "classic" bags (Speedy, Neverfull, Chanel flaps) don't do it for me so even if I buy them, they will just be sitting in the closet.