Because they think it tastes good.
Yes, some people believe that olive oil will improve your general health. I would start eating more salads, then top with olive oil and vinegar. You can also eat olive oil on bread.
Bread, fish, oil, fruit, meats.
The Carthage people ate similar food to what we eat today like bread, figs, fish and meat!
Bread, oil, fruit, vegetable and some fish and meat products.
The same as poor people - typically bread, olive oil, some fish sauce and vegetable/fruit.
Principally bread, accompanied by oil, vegetables, fruit and a sauce from fish or meat when they could get it.
With olive oil & tahina and a pita bread
They ate mainly bread, oil, fruit and vegetables. Meat was rare, extra protein to supplement that in the bread came from chickens and fish.
A classic vinaigrette has three parts oil to one part vinegar. However many people keep the calories down by using a bigger proportion of vinegar.
The staple was grain bread, with vegetables, fruit and olive oil, with some fish, fowl and animal protein when they could get it.
Oil has a lower density compared to vinegar. Oil floats on top of vinegar because it is less dense.
Vinegar and you also have to use a little oil, this makes one hell of a salad to eat mmmmmmmmm