The former Atletico Madrid captain told AS: "Liverpool doesn't have a club to compare itself to in Spain. It is the greatest club in England, with the most titles and always competes for everything. There is nothing similar in Spain.
"I am happy with the decision I made. Atletico had an interesting project, but the Liverpool offer was irresistible. It is a club that fights for everything."
Asked if he will ever return to Atletico, Torres concluded: "Yes. You know that you can never predict anything, but at this time I say to you 'yes'."