What i spend money on?

I must say that my money is divided in five things:

1.  I spend most of my money in food. This money is not for my lunch at university, instead is for my cravings, I have ton of those. For example I really like to eat chinese food when I go out from classes. But this is a problem because is not just this kind of food, I have a plenty list of my favorite cakes, chocolates, ice-creams, cookies, French fries and hamburgers that I like to eat constantly.
2.  Other part of my money goes to money for photocopies and materials that I need during the year, like notebooks, pencils and cardboards.
3.  Books are my greatest pleasure in the world. Maybe somebody could though that this is not a good idea to spend my money on, but I truly don’t care about that very much. If books where cheaper in Chile than the price they are now, like Argentina, my house instead to be a place where people can live it would be transformed into a personal library.
4. One of my hobbies is having photo albums, but they are really expensive if I don’t reveal many photos at once.
5. Maybe the last part of my money goes when I have to buy gifts for my friends and family. Anniversaries, birthdays and Christmas are some of the moments when the money I've saved in the year leaves my pocket, leaving me bankrupt.

I buy all this things at malls and supermarkets, and I realize I don’t feel real guilt about buying things that are not really necessary for living.