Re: Question about marriage in Islam
Let common sense prevail - ladies and gents 
One has to to be physically, emotionally and financially prepared for marriage.
In the old days, there was a Joint Family system, large families and tribes lived together and shared resources with each other. In those circumstances it was OK to get married at a young age. Often it involved the bride just moving from one floor of the haveli to the other. The parents still provided for them, as before… no problem.
Times have changed, cultures have changed, life styles have changed.
How many guppies do we have here who were married at puberty ? :aq:
How many of you plan to marry off your sons at 14 and daughters at 9 ? :aq:
Not many I think
The man is supposed to provide for his wife and take care of all her needs. Someone mentioned above that Allah (swt) has promised to provide rizq to everyone. AGREED - But please dont mix things up to suit your logic and mindset. If after marriage, munnay mian still asks for Rs. 10 from abba jee to buy sweets and candy for the new dulhan, I dont think its gonna make sense :D.
The median age for getting married has shifted from early teens (a couple of centuries ago) to late 20s or early 30s in the present age. This is because of the lifestyle, cultural changes and various other factors.
The real issue is that marriage should not be delayed, once the guy is in a position to earn rizq e halal and provide for his own family. And that happens after he completes college or university, or has developed certain skills that will help him earn a livelihood.