Because it costs development time to implement, which could be better spent on other features people actually care about. The fact that your mother is being taken into consideration should automatically invalidate your argument, as Elder Scrolls is clearly meant for advlt audiences. And advlts should be able to decide for themselves what they themselves can handle, moms should have no say in the matter.
To use a part of your argument, their mother is an advlt, and she obviously does not like gore. If she decides she wants to become a hardcoe gamer and such, and buys the game, from what was previously stated, she obviously will not want the gore. And she, as an
advlt, can, and should, decide that. So she switches the gore off. And everyone else in the world is not affected. Your game will not suddenly shut down because she wants to turn her gore off.
You fail to understand the notion that there are literally phobias for everything. A friend of mine won't play Skyrim because she has arachnophobia and Skyrim has giant spiders. Should those be removed to satisfy her? Some people are afraid of dogs. Remove the wolves? Some people are afraid of mountains. Guess you have to remove the mountains too so you don't lose those sales. Essentially, if you want to make something that takes into consideration all of the phobias people have, you'd end up with nothing if not for the fact that there is a phobia of nothingness. Catering to phobias isn't your problem, it's their problem which they themselves need to resolve. It's a mental disorder that you can't help by sheltering them from their fear. They go through life with a phobia, I think more than a video game will affect them. Considering video games aren't real and all.
No, I am getting sick and tired of people who want to have more toggle options in their game because they're unhappy with one part of it, and think it's up to the developers to make the game special for everyone. Frankly, I have argued this more times than anyone should have to, so I'll just say that if you don't like it, don't buy it. A few lost sales is no big deal.
An obscure phobia that a few in a thousand people, if not more, have, is no real loss of sales. However, the multitude of people (and there are) whose parents won't let them play such a gory game, or such, is a big chunk of sales that would be well worth Bethesda's time and effort. And, like ofnir pointed out, taking out a visual effect is much easier than other options. Plenty of games have done it, and plenty more will. It is really not a big deal, and it
is something that many people are concerned with. I am an advlt, but I don't want to see that gore. And if you do, by all means, see it all you want. But I don't, and there are evidently more than just me, as I have gleaned from reading previous posts, that feel that way. Don't push your views on to me, please.