Either this is a board of heroes or hypocrites. In reality, very few take them in.
I think some of you may not realise what you are talking about
*You do NOT have time for this. If you MAKE time, you may lose your job and not be able to do this anyway
*They might be in a mental state where they are in no position for gratitude. In fact it's quite likely they take everything out on you and complain about everything you do.
*Nursing homes are nursing homes for a reason. There are nurses, and at least one doctor. They all went to school for this. You did not.
*Ever change your own fathers nappy? While he complains you are a bastard as he is losing his mind?
*What's this mean for vacations? What's this mean for having any kind of an own life whatsoever?
If you are still convinced you'd do it, hats off to you. but its not so simple as ah sure you can move in with me. If you are an only child especially, this is your new dayjob here.
Not all nursing homes are as scary and crappy as they're made out to be. If you take a high end one, and simply DO ACTUALLY COME VISIT VERY OFTEN, I don't think you have anything to feel guilty about, it may even be the better option for your parent too.