But without a second thought, using a technique that means certain death, from what I can only assume is an escape from a rich and experience filled life without a second thought seems.. illogical. 

Genocide, his name should really speak for itself, launched 2400 missiles at a single city, instead of conserving them for the planetary wipe he was ordered to commence. Making the most logical and cost-efficient choices really isn't in his nature. He called himself Genocide, for god sake.