Alright I'll give it a shot.
1) MC is an ugly fuck that not even his mother could love him.
2) The family is motherless. It's the father who is going to fuck him in his tiny asshole.
3) The father is doting only in as much as he really wants your piece of ass.
4) The progress is too slow. Your...
A game wholly dedicated to bestiality? Not really. I like it when it's here and there. It scratches an itch. But I don't focus on it. It's just one of those things where you occasionally want a Hawaiian pizza instead of a Magherita.
I see many AVNs using Daz because of premade assets. How hard is it to make one yourself? Would it be worth it financially-wise? How much does it cost to commission and asset be made?
No I don't. I don't self-insert. I play a game to enjoy the story. And stories are better if characters, like the protagonist, have faces. I never try to imagine myself as the character. That's just sad.