That is why we said you can't have both. But if we are willing to accept infinite something then there could be a type of element that the more you put on it the higher the density it has. So infinity density equals infinite mass and no volume, then we could add that even at infinite density the volume is the size of an element. If we can have infinity mass why not infinite density? And since infinity + infinity = infinity that means both the energy to create the force is infinity and the energy to create the object will also be infinite.