The 3D galleries are just as much of a lost cause than the anime, anthro, wallpaper and photography galleries - they're like amatuer magnets looking for the quickest, easiest ways to get views or release their twisted mental desires. Only difference is they are much less popular and so complaints about them are few and far in between.
A great deal of 3D art relies heavily (sometimes entirely) on pre-made content that comes free with the software. These are often the shittiest ones since anyone with even remote skills would realize just how bad a lot of the free content looks (I do 3D art myself with Vue, and while it does have some cool stuff that comes with the more pricey versions of the software, a lot of the "free for all users" content is the same crap they were handing out seven versions ago) Often anything good needs to be purchased from more experienced artists selling models/scenes/textures etc. Even then it puts the renders on par with good photo manipulations at best, you can give them credit for creativity and composing skills, but the elements of the scene still largely relies on someone elses work
The porn freaks who render nothing but big-titted women, giant women stomping on men, alien women doing god knows what sexual activity that exists on the far edge of the galaxy etc - are all doing it to satisfy their own needs more than anyone elses I think. They're less concerned about using these programs to their full potential and making some legitimate-looking 3D art than they are about quickly generating something to bat off to
Lol, I actually had no idea it was as easy as adjusting a slider Lol, it's not just female characters that have that too. I'm a man's man and there's plenty of shit-looking renders of males out there with impossibly huge muscles and cocks - not really what I'm looking for But there's way less of that since there are less gay men than straight ones (since only a gay guy would even make those - straight women would probably be scared of such-looking guys, hell even I am )
Yes, good anime is as hard to draw as...good anything really, anime that isn't true to the style just looks odd even if the shading and colouring is great. There's a reason why I don't do it - and that is it's too hard to make look good But in my earlier comment it was moreso pointing out that 99% of the rest of the anime gallery looks like it was done by a 10 year old