One does not question such things... To do so is like asking...
How come the Hulk never rips his pants at the waist, or around his thighs? How come John McClane never rips his A-shirt vest? He only manages to get it very bloody and very dirty... How come Indiana Jones never rips his Fedora?
With Doctor Gordon Freeman it is much the same way... It is one of those great mysteries of life, of which we are thankful for.
During the events of black mesa the glasses have been fused to Freeman's face, this is why they never fall... they never break cause they were made in black mesa o3o
How come the Hulk never rips his pants at the waist, or around his thighs?
How come John McClane never rips his A-shirt vest? He only manages to get it very bloody and very dirty...
How come Indiana Jones never rips his Fedora?
With Doctor Gordon Freeman it is much the same way... It is one of those great mysteries of life, of which we are thankful for.