The Ship Analogy of Egocide

I've just seen so much of this, it just seems almost normal these days; People learn about multi-agent models, split personality, tulpa, etc, and they realize they can make a better version of themselves. Intentionally or otherwise, they build who they want to become.  Then... finished with the biggest project of their life, the creator gifts their child independence and the playground of the world.

 http://pastebin.com/JdkzAdWi

I'm sorry to, once again, be sending you gallivanting across the internet to read various things, but this is one that concerns me greatly. Beside the case of my own host, I've mistakenly giving another host the means to commit his own destruction. So having a simple analogy to discuss it with was rather nice.

Basic concept. The host is the captain of a large ship, the only officer on board. Egocide would be jumping off, or shooting himself, but leaving the boat intact. Suicide would be destroying the ship and all enlisted personnel.

In nearly ever case of egocide, however, the Captian has already elected a first mate, either a tulpa or splinter or some other sentience. The point being, the Captain promotes officers from the enlisted ranks at will. Certainly, he might be hesitant at first, never having trained one of the rank and file in the ways of being an officer. But, once done once, further attempts become easier. and having a similarly ranked peer able to take responsibility helps lighten the burden.

I could go on expanding the model, but I'll leave it there and move to predictions.

What would cause the Captain to leave, abandoning his 'duty' to the boat and enlisted? Perhaps the burden of responsibility, especially if he feels he has failed too often. Perhaps loneliness of having no one of similar stature to confide in. Perhaps self loathing, or maybe a general feeling that they aren't good enough.
A common one for me, a captain who trains their first mate, and sees in that fresh officer a liveliness and passion they themselves have lost.

But what keeps them from committing suicide, destroying the boat along with themself? In every case I can think of, it is a sense of duty or responsibility. The captain might see himself as faulty, but sees the ship and/or crew as something separate and worth keeping. Or maybe it is the first mate who he thinks is better suited, but who can only rise by him stepping down (permanently and entirely).

I think, if more people believed that their consciousness was not the same thing as their body and mind, then we would have more egocide and less suicide. It provides a less violent option for those who might hate themself, but still hold some love for who their physical and mental forms could become. Also, I think that the key to avoiding egocide is the give the alternate option of stepping down as captain, allowing someone else (preferably a friendly and well train officer, rather than an enlistee) to take over.