While it's my custom to provide aid to all who need it within my range, capability, and availability, regardless of make, model, or TYPE (i.e., motorcycle or automobile) of vehicle (I've DONE it), the operators can contribute responsibly to their welfare also, IMHO.
I'm not adverse to scrambling forum members for the purpose of rendering aid, but--the riders can make their own responsible contributions to their welfare, as well, I think.
For example, the American Motorcyclists Association (AMA) includes in its member benefits, ROADSIDE ASSISTANCE ((800) AMA-JOIN (800-262-5646)). Vehicle insurance policies may carry roadside assistance endorsements, also.
We must have insurance (or otherwise prove financial responsibility) to ride public roads. Some forum members have health and accident insurance (even BEFORE Obamacare); maybe life insurance. Is roadside assistance coverage desirable? If not, what's the down side?
Again, nothing wrong with lending a hand to a fellow forum member in genuine need, but . . . roadside service coverage has its place also, IMHO; YMMV!