Originally Posted by Digestif
The reason for this is, that this way, it's easier, i.e. faster, for TTG to do the game.
Ever wondered why Doug/Carley pretty much didnt show up the whole Ep.2, except for maybe 5% of it? And why they gotta die almost right at the start of Ep.3?
Because it's less work. If they'd played any important role after the episodes they could die in, you'd simply have to program a lot more, you'd have more dialogue to write and record and so on for a character that won't even be in every playthrough and you'd have to consider and implement a lot more options/social interactions into the whole game.
So TTG chose the easy way to do this and either kill em right of the start of the next episode or let em play little to no role in the next.
I'm guessing Ben won't make it far in the final episode.
Of course I get this, but that doesn't really have anything to do with lifespan at all. What you state is difficulties with branching storylines (which wasn't really my main point although a valid one).