Old age homes are mushrooming because lot of children dont want the parents to stay with them .
they forget the good things did by their parents .
all should remember that no institution can replace the family .
hope i helped :p 
these r the main points ...
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Nowadays old age homes are growing like mushrooms because some people don't like their old parents living with them.some people see their parents as a burden and liable this new frangled world the improving life style has led to the increasing number of old age homes.these people always wanted to seek  freedom as they are not patient enough to render them with all the services needed in their old age which requires care and support
due to paucity of time i have included some  hints you can elaborate and present your essay
very helpfull thank you
your welcome