I have already made my view known that I really don't care. However everyone should know that they generally are not great for those who might have seizure disorders. If you are subject to seizures and there is any chance then, of course, you have to tell your partner so he is prepared for what might happen. Most often seizures do not cause death (unless you hit yourself on a piece of furniture or that sort of thing). So you can choose to do them (maybe lighter than if you were not prone to seizures) but they make you feel good.