I think it's more than a little churlish to roundly criticise Liverpool fans for being attached to what has been their home for the last 120 plus years. There's enough among our number who still harbour sentimental (and frequently somewhat rose-tinted) feelings for Maine Road, inspite of the fact that it wasn't fit for purpose by the time we walked away from it. A place where you've grown up, and experienced great highs and lows, is always going to have a firm grip on you, emotionally. If you truly love your football club, its ground will be a cornerstone of your life.
The point is, however, that being wedded to a notion that your sporting home should be situated in the same place that it was before powered flight was invented, bears little rigorous scrutiny. The road, public transport network and housing stock around those grounds will now always limit the opportunites to give the punter what they want and to allow the club to expand in a way that will allow it to compete.
Liverpool will stay at a modestly developed Anfield. It's difficult to imagine that development advancing much further, unless something drastic changes. Sometimes vision requires taking what appears at the time to be an utterly insane risk. That approach is not the style of their owners.
I think Liverpool will ultimately glance upon the decision to remain at Anfield as the one that fatally flawed their aspirations to claw themselves back from the doldrums of English football and flourish as a club.