Marc Jacobs Totally Turnlock

Will someone please talk me down from the ledge? After subscribing to a most dangerous service, which I'll write about some other time (it emails you things that are on sale, in your size, from designers you like, daily), I came up on this gorgeous bag: the Marc by Marc Jacobs Totally Turnlock Tobo bag. I do love most things Marc Jacobs, but this bag crept up on me like the Botkiers of yesteryear. With its perfect puffiness, casually latched top and part-hobo, part tote presentation, I felt like it was an old friend. Or a baby. I got the feeling I imagine some women have when they see a baby -- that irresistible urge to want to hold it. The simplicity of the design and the versatility of the white (I happen to believe in winter white) pushed me over the edge -- the elements that make this bag appealing are the same ones that make Hello Kitty universally cute -- not so much what is there but what isn't. I also have a weakness for buttery-soft leathers, and this one looks like it measures up pretty well.

I've heard that Jacobs bags weigh a ton. Would that be a deterrent for me? Or could I argue that carrying the bag would be the only exercise that I get -- and then perhaps that I should get two?