I would never move out, i'd love to live in a joint-family.. I can't fathom the thought of my kids not being able to get love/attention by his/her grandparents.. I blv old people and buzurgs are a blessing around the house.. and i'm used to being around elders and taking care of them.. i'd like to continue after marriage too Inshallah.
No doubt there are many sacrifices u'd have to make.. as well as compromises.. I would never ask my husband to move out.. as I know how my parents would feel if my brother moved out post marriage :(
Most guys want to live with their parents..and it's usually the women that ask them to arrange for a seperate accomodation.