Those fans are angry at him for repeating the same offense and are fed up with his antics, which is an emotional reaction and a sign of his dwindling popularity among fans. That doesn't indicate that his overall output as a player was negative. Liverpool wouldn't have achieved what they did this season without him, he essentially carried the club. No matter how angry their fans are, I doubt they are stupid enough to underestimate the importance of Suarez's overall output for them. Hell they may want him gone now but if he ends up staying and goes on another scoring binge after his ban ends then I'm sure a majority will love him again. Some fans will be too disappointed by his actions to truly admire him again but that doesn't change the fact that he's immense for them on a sporting level.
If Suarez and Pepe (two players well known to be maniacs when they snap) aren't worth their baggage then how come they both played such important roles in helping their respective clubs achieve historic seasons? Hell even Maradona engaged in a lot of 'taboo' acts with the cocaine abuse, drug scandals, and violence yet he's one of the greatest footballers of all time.
With so many legendary players that were so controversial yet still accepted (Maradona, Cantona, Stoichkov, Zidane) are you really gonna brand Suarez as an 'untouchable' just for his biting? That kind of thinking is narrow minded in the face of so many other factors to think of which favor Suarez (how much he'd help our sporting ambitions, how he's the most elite player in the 'mobile 9' profile that Lucho wants for his system, how we need to get the best players in our squad to challenge a RM side that is much improved under Ancelotti and an Atletico side that's now confident after breaking the duopoly). He's a dirty player, a media nightmare, and a potential risk but given his sheer quality I'd be very open to bringing him here.