Marrying an unemployed graduate

No, it's not advisable. I think you know that already. :-)

For me, I don't want to marry unemployed man because it will affect relationship, you need to bear his needs and expenses.

Job is not a criteria for marriage.If he is not getting job due to his attitude then dont marry him, but if he is not getting job market then its not his fault and he need your support. I believe girls should be equally capable to take care of her family. Love and nature of person is important for marriage.

A motivational speaker once said that if a woman wants to marry, make sure the man has three keys. One is a key to a home. Next is a key to a car and lastly a key to an office. Only then can a marriage succeed. A woman needs to marry a man that can provide a roof over her head and a means of transportation to bring her around and money earned from a job. If any of these elements is missing then make sure the woman is independent and wealthy enough to provide all these things herself without feeling that the man is taking advantage of her.

if he's more business-minded and very good at it, instead of working in an office, then maybe he would still be able to provide for his family

He should use his brains and start a business while awaiting employment

One, this is a case to case basis. Two, if the man really loves you, he will immediately find a way to give you a good life and make you happy. Three, if the guy does not want to work and lets you do all the work, then leave him. Find a responsible man, my dear and your life will be at peace.