Because homosexuality is purely for sexual enjoyment. According to most religions, G-d made heterosexuality enjoyable so that humans would reproduce and inhabit this world. So in essence, it has higher purpose and isn't just humans...
I'm not sure what happened to the measurements, so I will post them again:
Size Large MEASUREMENTS LISTED IN INCHES
Chest (under arms, accross jacket and doubled) 45
Shoulders (seam to seam, across back)\t 19
Length (bottom of...