I've said this before, but I think this all really comes down to, what does the average want. We have to consider the values and desires of the masses when considering mass transportation. I think its a real issue that people who are very passionate and engaged in transit have values and ideals that may not match the majority of the transit ridership.
I do not intend to disrespect or 'bash' so called 'transit fans'. I think everyone has a passion and sort of obsession about some thing, be it sports cars or boats. But I do truly sense that many of the very passionate 'transit fans' that are also very pro LRT, tend to ride and value the system in a different way from the majority. People who, for example, might take great joy in just the trip itself (even I am one of these people I might add), or they might take great joy in how a mode appears (i.e how LRT 'interacts' with the streetscape). Truly, I think that most people who ride the system have other things on their mind, they have a destination that they want to get to as comfortably, quickly and conveniently as possible. Unfortunately LRT does not provide any of these, while subway provides all of these.
LRT is outdoors, and we are prone to nasty winters, and sitting inside a dinkly "shelter" in the blowing, freezing cold waiting for a glorified streetcar is a very discouraging experience. Getting stopped at a traffic light, ANY TRAFFIC LIGHTS, is a discouraging experience, and it makes the system appear even slower than it might actually be.
Its surprising how little talk I hear about the experience of waiting for the next train. It is something I consider often. When the weather is really quite repulsive and cold, even most unheated subway stations are quite comfortable: they are extremely well sheltered, as an intrinsic feature. But not only that, waiting 10 minutes for a subway train is an extremely rare event, I really doubt that would be the case with LRT.
Subways are very desirable for your average Joe, for the majority of users, it is the only system that has a chance at really causing transit dependence amongst a sizable portion of the population. We should not be building a system based on cop-outs, narrow minds, and the desire for some to enjoy the experience of riding a line where they can look out the window at imaginary 6-story mid-rise 'European' mixed-use buildings with cafes at their base.