If the guy was suicidal, the natural thought process people have is, “Just kill yourself by crashing the plan right away.” The irrational guy puts on the auto pilot, disables the crew, and goes on the long slow ride.
How many suicides have you read of or heard of where the person goes off to some desolate place and kills himself?
Unless it was to get insurance for their family, almost never.
Most suicides are a statement.
Husbands shoot themselves in the family bathroom. Women take pills and die in their own bed, etc.
This pilot probably would have zeroed in on the President of Malaysia’s house.