Old people were all sexxxy before they got dementia. So now that they have dementia they should be able to go on with their sexxxy lives! Just, you know, make sure it's consensual and all and then let Gramma go at it! Go Grams!
Oh. She's married? Well, that's ok. See, decisions about when and how and with whom to have sex are not serious decisions, like deciding whether to have a surgery. It's more one of those not-so-serious decisions like what kind of ice cream to have after dinner. So these old people who have dementia should be able to act out their feelings and whatever and have (ahem) fulfilling lives in the nursing home. Nevermind that Gramma isn't sure what year it is. She's horny!
One group of siblings just decided not to tell Mom that Dad was carrying on with some other wrinkly chick in the home she was using their life savings to pay for. So what if Dad has lost most of his faculties and never would have done that before? And so what about their marriage? We need to empower senior living and, you know, the patient choosing when and how to engage in the act and all that. Plus it's a "fundamental human right" to do the nasty.