Original sentence: All in all fast food is a very reliable source to get convenient and cheap food
Edited sentence: All in all fast food is a very terrible source of food, despite its convinience.It is considered to be a terrible industry because of child exploitation, spread of obesity, economic and ecological waste, health concerns,terrible labour practices, bad quality of food, animal slaughterings, and in the case of McDonalds, use sweatshop-type labour, among other massive concerns,