I was just about to say the exact same thing.
Basically, symbiotes take priority over the host. "A host is only a link in a chain", said Sisko in "REJOINED". He was echoing back what Curzon said to him, and as stated above, events of "EQUILIBRIUM" also show hosts are a secondary consideration compared to the symbiote.
In a way, I find that aspect of Trill society rather haunting... instead of wanting to be themselves, they'd rather surrender who they are to blend with another lifeform, essentially erasing who they are because you now become a combination of symbiote and yourself. You are never you again. It's a kind of death, really.
I suppose the idea of a part of you existing long after you're dead is very appealing, but I wonder if that also highlights a more nihilistic view among Trill regarding death.
I think this might be worth a deeper discussion in its own thread...