"unless youre going to be only in places where cyber cafes are nonexistant" - which today could be almost anywhere in Germany, outside of big cities.
Last Nov I stayed for 12 nights (4, 5, & 3) in 3 small towns in Germany. First town, no cyber cafe, but privatzimmer had Wifi. Second town had a few for-pay, publicly accessible computers in the book store, which was not open weekends or evenings. In the third town (Black Forest) my host didn't have Wifi. TI office had Wifi only, not public computers. I went by bus to Baden-Baden and found a Cybercafe.
The trip before I spent two hours in a town looking for the only for-pay, publicly accessible computer. In another town, I watched an entire tennis match waiting in vain in a sports bar for the only working publicly accessible computer to become available. In only two of the ten places I stayed did the hotel itself have an accessible computer, and in one case it wasn't connected to the Internet.
While Wifi is becoming common, cybercafes are going the way of Traveler's Cheques.
I've spent 14 weeks in Europe in the last 8 years, always with a laptop, and never had one stolen or damaged. The same concern could be said for using a laptop in this country, so, if you own a laptop, never take it out of your house (but then why own a laptop if you never take it anywhere?).
I guess it depends largely on how you use it. If you only use a computer to play video-games, watch movies, and send an occasional email home, it's probably not worth bringing it. However, if it is a valuable tool for your travel, and you have a lightweight, Wifi equiped one, by all means, take it along.