Two women or two men of the right age, having regular, unprotected sex are not on a level playing field with a straight couple in terms of potential to reproduce, neither are single men or women. The only ones who potentially have the chance to reproduce are the straight couple. That's not homophobic, it's just reality. Is it the job of the NHS to level that playing field?
Being same sex attracted (or being single) is not an illness, disease or disorder. That's what the NHS is for, treating illnesses, diseases and disorders. I'm not convinced NHS resources should be used on healthy people. The genie is out of the bottle and realistically if you can pay for it yourself, you can have it.
I think reproductive technology is an ethical minefield and I'm not really sure where I stand on the various methods/treatments.
I am very worried about lesbians and single women being used as a wedge to gain acceptance for surrogacy (which I believe to be abhorrent). If we accept that every person should be able to have their own children and it's an issue of equality, we are opening the door to surrogacy because gay male couples and single men don't have anywhere else for their foetuses to gestate except in the uterus of some third part, likely vulnerable and or poor, woman.