Definitely not the best forum to ask this. You are in a round about way asking whether a large number of the members of this site have possibly made an unwise financial decision, if that was part of their motivation. I also suspect a majority of Volt owners haven't considered grabbing a transmission out of a junkyard and throwing it in on a Saturday and so have no perspective on what you are talking about.
I agree in the sense that the Volt is a great car, just don't own one. While I really admire the Voltec drivetrain, I have dissuaded a few people from buying a Volt and instead steer them towards considering a lease. If their main concern is being financially prudent, I recommend going with something with a known track record.
Controls systems that require specialized training and equipment to diagnose/fix will generally lose to simpler ones if the acquisition cost is the same. Unless it was dirt cheap, I wouldn't own one without a warranty.