It is a pity that you appear to have misunderstood how the SBI program works. It is a way for sponsors to support other accounts via a long-term lockup of STEEM with someone who has shown themselves to be trustworthy and ethical over a very long period of time on Steem.

This benefits STEEM by reducing the amount of liquid STEEM that is sent to market for dumping, it supports small accounts that would otherwise never see the light of day from the "big" accounts...

This gift is done with the knowledge that we are essentially parting with 50% share of the SBI (the gifting portion) and the knowledge that this is an investment with risk and not a guaranteed ROI like the bidbots of #oldsteem.

This gifting is the embodiment of #newsteem... in the style of "Give a man a fish and you feed him for a day; teach a man to fish and you feed him for a lifetime".

The fact that there are many of us who are still willing to gift other smaller accounts SBI despite taking a additional negative vote from you should point out the fact that it is something that is done from caring for others rather than a return on investment, after all, if it was driven by economic gain, the rational choice would be to stop. Thus, there is the component that is not economically minded, and that is the gifting and support of others... however, in the modern world, these things are not seen to be important by many people...