I’d just like to add that I think a large factor in the American perception that there aren’t enough goals in football stems from the fact that most Americans only pay attention to football during the knockout stages of the World Cup (if then). I think it’s certainly the case that in knockout competition, teams tend to get a lot more defensive in the later stages, because the stakes are higher and the cost of riskier play is much more absolute. So you frequently see very tight matches with neither team willing to commit forward a great deal, lest they be caught on the break and end up trying to break down an opposition defending a 1-0 lead and sticking 11 men behind the ball.
Good old wikipedia indicates there have been 20 penalty shootouts in the World Cup since they were introduced in the early 70s. Due to the various tournament formats used since then, that represents 112 knockout matches (if I haven’t miscounted). So that’s 20 games that must’ve ended even after 90 minutes plus whatever extra time and sudden death was implemented at the time. I can’t seem to find a ready source of data to tell how many of those were scoreless, but it’s still quite a high percentage of draws, it seems to me, particularly taking into account extra time. There were a couple of 0-0s in last year’s tournament, certainly (England/Portugal and the utterly dire Switzerland/Ukraine). If someone more enterprising than me can be bothered to work it out, I wouldn’t be surprised to see 0-0s and 1-0s were much more common in knockout play than in league play.
On the subject of penalties, I really liked the suggestion upthread by MaxTheVool about a better potential tie-breaker. While I’m not convinced that penalty shootouts are the complete travesty they’re sometimes made out to be, I think the sort of powerplay trial scheme he described could be fantastically entertaining. I’d love to see it tested somewhere, even if nothing comes of it.