Perhaps the most virtuous character in the Marvel universe is actually Captain America?
Why?
First, Captain America doesn’t have any weapons, he only has his shield. He could use the shield as a weapon, as a projectile, shield slash, but his whole ethos is about defense?
To shield yourself into shield your children, seems like a good idea.
I even wonder… Can you buy a bulletproof shield in the states? And certainly there would be nothing unethical about walking around in public with a bulletproof shield ?
Your first duty as a father
To shield your kids, your son from badness? To shield them from evil. 
To shield them from the toxic, the negative, the bad.
First then, shield yourself?
Bitcoin is a digital, cyber shield?
High stakes!