Finally have more time for a reasoned response.
The reason I chose the Machine Men was... oh wait...
Anyways, more seriously, this was a topic I had floating around in my head for a column i'm hoping to start doing. I think that really what it comes down to is that most people who collect the toys base their collecting on already established mythos. They accept caricatures of Ironhide, Prowl etc. which are the basis of their affection for TFs. That's why most of us discuss the toys rather than the fiction. For the majority of us, we already have established feelings about the TFs themselves.
And given the priceand accessibility of comics, it makes it hard for those to make a meaningful impact. So generally we just stick to the cartoons - good or bad b/c they're utimately free and don't require us to devote time to read. So yeah, it short, most ppl talk toys b/c it continues their affection of the franchise which especially helps when new toy lines carry pre-existing names.
For me personally, I've developed from a purely character/fiction mindset to a broader universe of TF toys one. I'm pretty much after anything that transforms and looks good these days. But the stuff that really gets me is the Henkei/Classics stuff. I'll by doubles, triples, you name it. I think I have at least 2 of each figure from those lines and my enthusiasm comes purely from the fact that I'm G1 nutjob and it gives me a bundle of joy chasing them down .
Galaxy Force is probably the best example of where I've never even been exposed to an iota of the fiction yet am keenly pursuing the stuff. I think they're great toys and I enjoy hunting them down even tho I have the Cybertron versions already.
So yea, I think I have a more segmented collecting habit now. Different lines for different reasons which all have different priorities. But alas, I'll save that for another column.