Did anyone watch the 120 minutes prior to the "last play"?
To say that Suarez "cheated" is a gross mis-characterization of the play and Uruguays game. The ball came in from a free kick outside the box, was headed down in the box and then volleyed toward the net. This first attempt was amazingly stopped by a player on the goalline with his feet/legs. It was then headed back on goal and an Uruguayan player tried to head it, and Suarez who was just behind the goalline inside the net blatantly used his hands to push the ball out. And in accordance with the rules, a red card was issued and a penalty kick given.
How is this any different than plays in which players deliberately take down guys in the box after they get beat? Have you watched International soccer, especially large tournaments like UEFA, or even the Super Classico? Suarez made no attempt to deny the infraction or hide his behavior. I also think it was a desperate, instinctual play (especially due to the sudden reactions) and not some pre-planned, conscious play, which is more what I think of when "cheating" is involved. (point shaving, or stealing signs in baseball, or using illegal equipment)
Ghana was awarded a penalty kick, which if taken well is unstoppable. (most saves are result of a bad kick not the goalies skill). They had more than fair opportunity to win the game. Given the options, if you asked a professional soccer player "if the other team "cheats" during the entire game, but at the end you could have a single penalty kick which will win the game", I would bet 99% of them would take it. And I don't even consider it "cheating". At the end of the day: Ghana missed. This is separate from Suarez's conduct, and certainly from the entire game.
Now the real issue I think the OP has with this game, (and one I have with this entire World Cup (and I have watched almost every game)), is the rules, rule decisions, and conflict resolution as dictated by FIFA. What could have been done in this case, as in Ice Hockey, is if an offensive player is about to score a goal on an "empty net" and a defenseman not the goalie throws his stick to block the puck, the goal is automatically awarded as opposed to a penalty shot. But this is an issue with the rules and NOT the morality of the players. Don't confuse the two.
This World Cup has shown that FIFA has failed to evolve with the sport, technology and athletes on the field. The game moves faster and with greater athletism and the rules, refs need to evolve. But the "Old Guard" in charge has no interest in doing that. They have been the winning teams in the past. Hopefully, now that this World Cup has exposed "old Guard" national teams as being Old School, perhaps the rules will catch up to the play on the field.
Ghana is a young squad (they won the U-20 World Cup against Brazil). They will be back and I will be cheering for them again.
