A beautiful topic to be discussed...
Joint families are indeed a boon when it comes to sharing of joys and sorrows, balancing out on financial discrepancies, and also a great moral booster during crisis situations.
However what needs to be remembered is the concept of SPACE...not just physical but even otherwise..letting others blossom in their field without too much of interference and control...this becomes somewhat difficult as there usually are some members who tend to take extra interest in others affairs in the family and it can become claustrophobic!
Nuclear families are welcome when there is less space - physical - and gives more privacy to the couple and immediate family...but can be a big disadvantage when faced with a crisis...though today one may say that friends do help...
There can nothing more comforting than having a close one understanding your needs and rising to the occasion instantly without giving a second thought!
So all in all...each has its own set of good and bad...but living together far outweighs the concept of nuclear family...as it teaches tolerance, sharing, caring and taking people along with you...an important tact to be learnt in dealing with the world too...
So joint family it is for me...