Some very good ideas and opinions were shared here on this topic. My feelings are mutual, in the sense that "all the above" apply.
The soul is the core principle of life. To some it is immaterial, while others consider it possibly material.
It is a matter of perspective. An example, that relates to the topic, being that life feeding off of life should not be looked at as parasitical or cancerous or distructive. It should be looked at for what it truely is. A "coming together", a "reunion". As stated in previous posts, "matter ... is ETERNAL and can't be destroyed, only change form." Interesting to note too what Luba wrote regarding brains and souls. There is a book by Francis Crick titled "The Astonishing Hypothesis" with the subtitle, "The scientific search for the soul". Crick holds the position that one can learn everything knowable about the human soul by studying the workings of the human brain (
http://en.wikipedia.org/wiki/The_Astonishing_Hypothesis). More can be shared on this subtopic...but returning to the topic at hand...do replicants have souls? Souls (in general) in the "religious" sense I would have to say no. God(s) did not create replicants. If soul is to be construed as an "energy" or "life force" then one could say yes.
Very interesting topic indeed.
Cheers!