2) Why Doesn’t Superman Throw The Spear At Doomsday?
Superman doesn’t need to ‘die’ at the end of Batman V Superman. (That in itself raises another question: why kill Superman off at all if you’re only going to suggest he’s still alive just minutes later, and also when we know Henry Cavill is contracted to return in future movies? Even plot- and franchise-wise it doesn’t make sense for him to be killed.) Know why? Because spears don’t need to be administered – they only need to be thrown. That’s why they’re spears.
For some unknown reason, Superman thinks the only way to take down Doomsday at the end of BvS is to fly the Kryptonite-tipped spear into the creature, sacrificing himself in the process. Obviously, he doesn’t need to do this at all. Spears were developed so they could be lobbed. Superman appears to have gotten confused, though, believing that the thrower has to go with the projectile in order for it to work. Maybe this is why Superman never uses weapons.