Okay lets put Torres aside as a person, i do believe we do need someone with the composure, instinct and cool in front of goal right now and not necessarily someone who can sprint like the 22 year old Torres. Suarez is marvellous but in front of goal he is trigger happy, Torres when in the groove made it look effortless. So losing you'r legs isn't the be all and end all, this season our problem is that our chance conversion is dreadful.
I genuinely don't believe Torres will ever recapture his form as a player. His game was fairly reliant on his pace, so his legs going (which it seems to me they have) is a major blow for him. On top of that his confidence is shot to pieces, remember the Torres who had the audacity to turn his man, beat his marker or curl a ball in from outside the area? That player has dissapeared and I think when a player gets to his stage in their career, and they haven't won as much as they've probably deserved, and they're going through a run of bad form stemming from all sorts of injury problems, it's an uphill struggle to replicate their younger days.
Strikers often have shorter careers and greater peaks and troughs than players in other positions. Robbie Fowler was the greatest finisher in the game for four years, Michael Owen was a superstar from 1998-2003, Samuel Eto'o was the best in his position for a few years at Barca. It happens, goalscoring is often about physical attributes and confidence, whereas other positions rely more on intelligence, positioning and reading of the game.