Huge soccer fan, but I do think that the lack of scoring hurts the game. Nothing more frustrating than waking up early on a Saturday in December to watch the EPL and you get a 0-0 draw because an inferior team decided to park the bus and play for a point. As a fan of many other sports, there are certainly times when LOW scoring games are exciting. Watching an incredible pitching performance or seeing an NHL goalie stand on his head for 60 minutes or watching a great NFL defense go to work have their appeal. But when its NO scoring, it just drives me nuts.
I know this will drive my friends in the soccer thread crazy, but I do think the game would be more fun to watch if 5-7 goals a game was the norm. I don't think there's any way to accomplish that without absolutely destroying the fabric of the game, but that's how I feel. For me, the appeal of the game is watching incredible individual talents execute brilliant moments. Yeah, having those moments happen 4 times a game instead of MAYBE once would lessen their appeal a little bit, but I'd be willing to make that sacrifice to avoid 0-0 or 1-0 snooze fests. Not saying ALL low or no scoring games are boring, but most are. The most obvious example of them not being boring is when the US team is playing. Nothing in sports does it for me like watching the US team score a great goal (especially in person).
But yeah, to say soccer hasn't "caught on" is nuts. Lots of people don't like it, but it is undoubtedly successful and not going anywhere.