Moving, scams and what junk to take, part 2

I am currently still on the hunt for a reliable company to move our what-have-you. As this process moves along I find that we are inclined to take less and less crap and, at this rate, by the time June rolls around, we may be down to a small backpack with our laptop and a change of underwear. Realistically, though, this leaves me in a quandary about stuff at large. I mean, here are the three options for our stuff: 1) move it to Germany 2) store it 3) throw it out/give it away.

This leads me to another unknown in the proverbial life equation: how long might we be in Germany? Of course, several variables are at work regarding the answer to this question such as: will I get a job?
Yes: we stay longer.
No: we stay not so long.
If I get a job, do we both like our jobs?
Yes: we stay longer.
No: we stay not so long.

You get the picture. And the relevance to what stuff we take and what stuff we store or give away is this. If we need it, we should take it. If we don't need it, we should get rid of it. I mean, why leave stuff in an attic indefinitely? Particularly since we are forecasting a smooth future without said stuff. Right? But what if we are back in the U.S. in a year? If I use the "if it doesn't go to Germany, it goes in the garbage" rule, this means we would have to buy all new small appliances, lamps, pretty much anything that plugs into a wall and all new furniture (since none of it is going to Germany.

Also, there is a whole heap of sentimental clutter that I just can't bear to part with. For example, all of the really gaudy afghans my grandmother lovingly knitted for me, a bunch of antique stuff we bought and acquired in Japan and my sewing machine (which, while I don't use it a whole lot, I swear one day I will). I also have a road bike that David is still chafing about and I just refuse to get rid of it: it's 20+ years old and it looks brand new, it's Japanese and just very cool, but I don't need two bikes in Germany. Even though the Germans are simply mad for bicycling.

Part of me wants to heave everything in an actual and symbolic cleansing ritual, just simplify my life. The other part of me wants to stash it all in the attic in question and pretend that I have actually purged. I think I could actually toss it all except for that big plate from Japan and the antique dresser and the dining room table and...