Feeling the testosterone simmering down a little, you pause to think on what's just happened to you. You have been given a gift. Power.
There are those in this world who would kill to have it for themselves or to keep it from others, others who have it already, others who will soon enough.
The building...
You sense movement, life, inside. They are alive. They can rebuild this machine. They can make NEW you's to stop you, to compete with you. To give others YOUR power.
Indignation and rage quickly explode inside your mind.
"How dare they..." you growl, "How dare they even consider it! It's mine! My power!"
In seconds, you've grown to 60ft and have packed on obscene quantities of mass, purely by semi-rational rage.
In seconds, you've begun to smash the building. You hear screams, blood-filled screams and cries.
When you're sure you've pulverized it all, you slowly roll yourself up to 70ft, then retract some muscle--for comfort, of course.
Sighing, you look around. Everyone is dead; all the evidence of what happened is gone, obliterated. Except for you.