Deep fried food is so tasty and delicious because of the high energy and calorie level that the deep fried food contains.
The deep fried food stimulates several different senses at once which makes it taste good through out taste buds.
Deep fried foods are so good in taste that some people overeat the foods which cause health problems such as heart disease, weight gain, diabetes etc.
But in moderation deep fried foods are healthy although not the healthiest foods to eat.
I only eat deep fried foods in moderation because I don't want to risk my health going downhill and I hope to make it past 100 years old and still be active and fit.
The texture of the deep fried foods also give the foods a good texture and sound when biting into it and the grease and oil that deep fried foods are cooked in also tastes good.
That is especially true for bacon grease which you can also use to deep fry foods in your deep fryer as that bacon grease tastes so good.