BOPralph, you must be kidding!
What of Vitali K? He helped organise the flight to Barcelona and lost his wife and children as a result... his emotional life was destroyed with that aircraft. To try to understand what he felt is beyond me and, I think, most of us.
So he decided in a premeditated act to destroy the 'emotional life' (as you put it) of the controllers wife and child by terminating the 'controller'? Is this how they do business in Russia? (I think so, I observed the loading of a western business man's coffin into my 737 at St Petersburg- rubbed out for 'business reasons').
Premeditated murder is murder plus a bit. The evilness comes from it being planned rather than a sudden mental outburst. If any sentence deserved life, this was it. I find it difficult to have any sympathy for him. He should be locked away for 20 years
after parole. The message is 'you can do it, and it may not cost too much!'