Am I the only one who thinks it REALLY BLOWS that content creators no longer support or even give a damn about Genesis 1?? 

While I am by NO means an "established seller," I do support BOTH Gen4's AND Genesis 1 in most of my recent content since getting back online, as much as is humanly possible. I'm working on one such package right at this moment actually, that would cover M4 and Genesis 1, and I have made morphed characters and poses for Genesis 1 as well. I have NO plans to drop support for Genesis 1, or the Generation 4's. On the flip side, however, I do NOT currently support Genesis 2's in any way, primarily because I find them to be far less flexible and less versatile than Genesis, and I basically see them as a step backwards from Genesis 1.

So, to answer your question above - no, not ALL content creators have abandoned Genesis 1. I do my best to support both where possible. But again, I am not an established seller; I'm a content creator who makes primarily freebies, with the occasional rare for-sale item which gets sold over on Content Paradise when I do come out with a for-sale item. My freebies get posted both to my main website, and to ShareCG under my brand (Childe of Fyre).

I don't have a LOT posted yet for Genesis 1, because I was offline for over a year due to lack of computer, but since getting back, I have been slowly producing more content again. No, not all content creators have abandoned Genesis 1. I am one that has not. Here is a current list of my Genesis 1 content (please note that I do not generally post freebies on Renderosity itself any longer) :

Blake Nightwind (Genesis 1 - shape and poses) - ShareCG and my personal website.
Hannah Moonriver (Genesis 1 - shape and poses) - ShareCG and my personal website.
Spirit of Despair (Genesis 1 - poses) - ShareCG and my website.
Wynter Sox (Texture's for Fisty's free ankle socks which were made for Genesis 1) - ShareCG and my website.
Brown and Green for Teen Swag (1 texture for the overshirt and undershirt from the Genesis 1 TeenSwag product) - ShareCG and my website.
Traumatized Childhood (Genesis 1 - poses for the figure, built on the Basic Child shape set to 1.0) - ShareCG and my website.
Kendra (Genesis 1, Shape for the figure) - For-sale item; over on Content Paradise.

That's my current list of Genesis 1 supporting items. I've got another one in progress right now, Sani, who will be for both M4 (Poser native files for the Poser users) and Genesis 1 (DS native files for DS users), and be a full set of skin + options, and morphs. He's nowhere near ready yet, as he's a huge package and I'm still working on him and his add-ons at this time. I also have plans to re-dial Nathan Tlaloc's morphs onto Genesis 1 and release those as well (he was originally made for M4 some time before I lost online access, and I already had posted DS-native mats for using his skin inside of DS some time ago).

No, not all of us have abandoned Genesis 1.