Unfortunately for someone who has not served in the military the answer is easy. The problems are in housing. In the military you have hundreds of men and women living in very tight quarters. When the military integrated women into combat positions it was a logistics and housing nightmare. Have you ever seen the sleeping quarters on a submarine or in forward combat position. When they integrated women it was fairly easy. Just add separate quarters for men and separate quarters for women. Now what do you do? Separate quarters for men, women, gay men, and gay women, well that won't work. So we're back to just separate sleeping and bathing areas for men and women. I don't know about you, but I would be uncomfortable with that. Have you ever seen gay men go to the bathroom at a gay bar. They all us the stall toilet and no one uses the urinal. I'm not gay but it seems they have privacy issues, too. So if you can figure out sleeping and bathing arrangements that don't offend or cause moral problems please let the military know. I'll bet it's what's causing the hold up.