Understandable, but thumb drives tend to be rugged little buggers. As long as you don't break any of the connector points (usually where the USB plug attaches), they tend to keep chugging.

I had one go through the wash. Yes, washer, with soap, and the dryer. Not only did it still work (it's on my keychain right now), but I didn't lose any data. Rugged little thing, indeed.