I haven't lived in an all-glass tower, but I've read many complaints of units becoming too hot or too cold and high energy bills. The proponents of glass towers will tell you that the glass has gas between the panes for insulation.
But that won't be as effective for insulating the building as brick, stone, or precast panels, especially as the seals break down and the gas starts to be released. Developers should have shifted to using to more brick, precast, and stone to meet the new building code requirements instead of trashy spandrel panels.