assalamu alaykum
raatkirani

good post.
My husband is the youngest but the middle son is now left in the house and has now shouldered responsibility, alhamdulilah,so i don't know about the 1st son bit?
I don't think there's a need to live with parents unless they need your help, but even then it can be done by living close by. My nan is in her 70s and is still capable of looking after herself, I don't understand why so many desis/arabs feel like they become crippled as soon as they hit 50/ their son gets married??