If I show more than half of the pictures for free, the people subscribed to my patreon page could be a little upset, since they are paying to see my images, and I can't show them all for free.
I place these animals to let people "understand" what they will buy, because even if the important part is covered I show what's happening in these pictures, like the places where the girl got stabbed and sex positions, like fucking or blowjobs.

When I publish one of my albums I always show some images about it, and I bet that many enjoyed and saved on their computers the fourth pic with the girl getting gutted, without "animal censorship".

It's clear that many people doesn't want or simply can't pay for this kind of art, I understand that and that's why I show some free pictures. But I can't show them all or my patreon page will go down.
And I also bet that if I published the first four images without the advertising with animals, nobody would have said something bad, just saved the images or skipped to the next thread.

Doing 3d renderings is easier than hand drawing? True, but there are a lot of things that you have to know about it.

To draw with your hand, you need skills, and I totally respect that since I pay myself other artists for their drawings, but to draw you don't need anything else, just a pencil.

To do 3d art like I do, you need models to use or create them by yourself if you are capable to do them.
Do you know how much every single model I use costs? Let me give an average pricing:
the characters go from 12$-19$, and here we have two of them.
The hairstyle, almost the same price, maybe a little less.
The room, other 18$.
The clothing of the male, 16$.
The knife set, around 12$.
The blood effect you can see in the fourth image, the model plus the right blood shaders are combined to 20$.
Maybe something else for the lighting of the scene, let's say other 10$.

If you don't believe me try to check the Daz3d site and you will see that the prices are all from 10$ to 20$ for every item.

Plus, to make hand drawings, you need your hands, a pencil and a paper.
To have high resolution 3d renderings, you need a top computer, more than gaming ones, that's why I bought a 3200$ computer few months ago.
And I can take few hours as well to do these images, setting up the characters, the enviroment, the lights (there are the real pain in the ass since they will influence the render time a lot) and the posing of the characters... do you know that I move every finger section to match the grip of the boobs and nipples? just to make an example.

I also think that's hand drawing arts is great, and I pay every month artists I like on patreon to see their works, just like I pay other 3d artists. It's a different form of art, but it's art and if it features subjects that I like, I'm willing to pay for it.

I don't have the right skills to draw, so I'm working with 3d renderings. And believe me I'm not going to be rich with this, I do this to cover all the costs that 3d art has. And 10$ won't make the difference, even if 10 people will buy this album (and it won't happen) it would be 100$ for me. Can I live with these 100$ when an average house rent is 750$ here in my country? (Italy, I converted the price in $)

I'm not angry with you. I understand your concern about this, but I hope that you will understand my side.