On Saturday at Anfield, Steven Gerrard’s 15 years with Liverpool were honoured with a testimonial against Olympiakos, the team against whom he scored one of his most famous goals.

The match was a tribute to the man who has done more to thrill Liverpool supporters than anyone since the years when they used to win league titles.

“No player deserves more respect around the world from true football fans,” was the verdict of another legend, Paul McGrath.

Football will remember Gerrard as a dynamic athlete who could score spectacular goals when it mattered most. But Liverpool supporters will also remember him as a romantic who bound himself to a doomed cause. All Gerrard’s accomplishments for Liverpool are cast in a more saintly light by the knowledge that he could have won many more trophies playing somewhere else.

Everyone knows that Gerrard wavered along the way – he nearly joined Chelsea in 2004 and again in 2005. In hindsight those Gethsemane moments make his dedication to Liverpool more poignant. He was painfully aware that staying meant giving up his best chance of winning a league title, and yet he stayed.

It was that self-sacrificing loyalty that Saturday’s crowd had gathered to celebrate.

Given the theme of the occasion, it was fascinating to see what happened in the 62nd minute when Luis Suarez rose from the bench and approached the pitch in readiness to replace Iago Aspas.

Here stood the man who has spent the last two months telling the world he wants to leave for a bigger club, and the cheers from the Anfield crowd could not have been louder had they been for Gerrard himself.

Looked uncomfortable
Suarez looked uncomfortable, his eyes darting about nervously under a furrowed brow as waves of adulation rolled off the slopes around him.

Suarez has scored a lot of great goals for Liverpool but he has also brought enormous embarrassment upon them. He finished last season by getting himself banned for 10 games, and then he crowns it all by announcing he wants to leave.

Why, then, did the crowd at Anfield choose to repay disrespect with devotion? The answer might lie in the fact that they have already had to go to such extremes to defend him.

The American founding father, Benjamin Franklin, noted in his autobiography that the psychology of favours did not work as most people thought it did. You might intuitively expect that the way to win someone's favour would be to do favours for them. Franklin saw it working the other way around.

Early in his political career, Franklin wondered how to win over an influential member of the Pennsylvania General Assembly who appeared to dislike him. “I did not, however, aim at gaining his favour by paying any servile respect to him,” wrote Franklin. Instead, he asked his rival to lend him a rare book from his personal collection.

Franklin found that, after he had returned the book, his rival’s attitude towards him changed dramatically: “He ever after manifested a readiness to serve me on all occasions, so that we became great friends, and our friendship continued to his death. This is another instance of the truth of an old maxim I had learned, which says, ‘He who hath once done you a kindness will be more ready to do you another, than he whom you yourself have obliged.’”

What is known today as the Benjamin Franklin effect is rooted in the basic premise that nobody wants to believe they have been taken advantage of. If you do someone a good turn, you want to believe the person was worth it, so you unconsciously become better disposed towards them.

Standards of decency
Liverpool fans who have spent years defending Luis Suarez do not want to have to admit that they have been had. Many of them distorted or suspended their normal standards of decency to support him when he was accused of racially abusing Patrice Evra. Once you have gone to those lengths to stand by your man it becomes more difficult to find fault with anything he does thereafter.

Suarez’s misdeeds since then have, if anything, entrenched that belief in his essential worthiness, which will only finally crumble if and when he pulls on an Arsenal shirt for the first time. At that point, the tribalism that overrides all other considerations in football will dictate that he is installed as a hate figure.

The attitude of Liverpool fans towards Suarez makes for an interesting contrast with the attitude of Manchester United fans towards Wayne Rooney. Rooney was booed during his last appearance at Old Trafford, when he went up to collect his Premier League winner's medal.

The United supporters know Rooney is wanted by a rival club, and no doubt many of them would like him to stay. However, it seems unlikely that if Rooney played at Old Trafford later this week he would get the kind of love-bombing Suarez experienced on Saturday.

Rooney might wonder why he gets booed while Suarez, who has done far less for his club, gets cheered. Maybe it’s because the most controversial thing he has done in nine largely productive seasons in Manchester is submit that transfer request in the autumn of 2010. If only he had had the foresight to commit some heinous outrage along the way – if he’d drop-kicked an opposing supporter, say – the fans might still be in his corner.