Another maybe.
Maybe they didn't have anyone to consider and doubt the 'consequences' would even come into it. Just try to imagine a little harder sir, because that is all we can do. Not really for discussion in this place.
Hold on a second, how can you suggest they had nobody to consider?
They had to consider every other person on this planet who might have to find them and they had to consider what that would or may do to them! That sort of thing could be enough to seriously mentally scar them! Just because they may not have had any family does not mean a thing.
Entirely selfish, and I'm talking purely about where they did it.
Do whatever you want to yourself in the confines of your own home ffs.