The thing is qwerty, it's really only up to your father who he has in his house, likewise who he leaves his money/ property to. I'm not trying to take sides here but it's just something he has to deal with. Only IF he leaves you anything in his will, will you really have any input and as someone else says he might well change it perhaps in their favour if they all get along- it's fairly irrelevant what you or anyone else thinks about them, at the moment it's just your father's opinion that counts..