I have a mountain bike which I use for exercise, but it is also cheap transportation. While I also have a car, I see my bicycle as an important alternative. In our time of rising gas prices, alternatives to automobiles are increasingly necessary. The bike is a great one as it is very clean. As a society, we also don't get enough exercise; so the bicycle serves the dual purpose of giving us green transportation and improves our health at the same time.
I see BICAS and other bicycle coops and clubs as serving an important function and am happy to help further the cause. If these designs are helpful to you in any way, I will feel good about the contribution. Anything we can do to promote a healthier, cleaner lifestyle is a plus.