Hi there! Bamboo (technically not a wood, but a member of the grass family) is actually an extremely strong and durable material. One of the main benefits is the eco-friendly factor. Bamboo replenishes itself quickly in nature, so it makes for a more environmentally conscious material. There are pros and cons of any sink material, of course. Following is a link to interesting bamboo facts, followed by one from BHG.com that speaks to the benefits and drawbacks of several common kitchen sink surfaces.

http://www.calibamboo.com/whybamboo.html
http://www.bhg.com/kitchen/sink/material-installation-configuration/