The violation of consent itself is another form of harm, as we see in cases of r***. The scenario you proposed would still be causing more harm than the voluntary method.
rarWars
In most cases, the suffering caused by the harvesting can balance out or outweigh the good done to the transplantee because the unsanitary conditions can cause horrific infections in the victim, not to mention the potential loss of function due to lacking the organ. Also, that stolen organ will likely go on the black market and be sold to a rich person, increasing overall suffering by extending their life and thus their exploitation of the working class. Even from a utilitarian standpoint, voluntary organ donation is clearly preferable, and organ harvesting is just as bad as it is in other philosophical frameworks. Absurdly simplistic analyses like this are nothing but a strawman.
The bishops return from vacation with a deity of their own to fight Cthulu.
Yes, it's still fun
Taiwan, Serbia, Singapore, Iceland, Barbados, Ethiopia, Georgia, Moldova, Slovakia, Denmark, Greece, Togo, Lithuania, Estonia, Tanzania, Kosovo, Samoa, Honduras, Hungary, France, India, Italy, Peru, Slovenia, Bosnia, Trinidad and Tobago, Sudan, Switzerland, and San Marino. And that's just current heads of state. Also they "rule" (in terms of being cool) everywhere. Hope that helps :)
A mysterious trapdoor opens in the floor next to the table...
The letters and numbers on the edge of the board are fixed so they accurately reflect the coordinate system of the expanded board size. (Except for the j-file, which remains unlabeled.)
Untapped landscape screenshot frontier
Consent certainly can be a factor in utilitarian analyses, but it depends on the philosopher how strongly it is weighted. I'm not a strict utilitarian myself; my original point was to show that the premise of the meme (and in general, public understanding of utilitarianism) focuses too much on an extreme, comically oversimplified view of utility analysis.