LCDs are better than CRTs because:
They are smaller and lighter.
They consume less energy.
The image is crisper because each pixel is displayed by a specific set of liquid crystal cells.
Eyestrain and fatigue are reduced because there is no flicker.
While there is no conclusive evidence about the health hazards of low-frequency electromagnetic emissions, LCDs emit much fewer than CRTs.
Some LCDs pivot, so you can work in landscape or portrait mode.
LCDs are less prone to interference from other devices, and you can put two side-by-side without encountering problems.
The image geometry is always perfect.
Convergence is always perfect.
The flat face of an LCD tends to reflect less glare than most CRTs.
They tend to use fewer hazardous materials and are easier to recycle.
They look so much cooler.