The OP has the question backwards given recent scientific developments
The OP should be "Is science about to make heterosexuality obsolete?" and the answer appears to be yes. Scientists are working on a way to develop male sperm from female stem cells meaning that two women would be able to have a baby together and the parents would be the biological parents.
"In 2006, Dr. Karim Nayernia of Newcastle University generated sperm from male embryonic stem cells that fertilized female mice and produced offspring. A year later, his team was able to derive primitive sperm from stem cells taken from the bone marrow of human males. From Here
So it looks more likely that science is about to "cure" heterosexuality.
The OP should be "Is science about to make heterosexuality obsolete?" and the answer appears to be yes. Scientists are working on a way to develop male sperm from female stem cells meaning that two women would be able to have a baby together and the parents would be the biological parents.
"In 2006, Dr. Karim Nayernia of Newcastle University generated sperm from male embryonic stem cells that fertilized female mice and produced offspring. A year later, his team was able to derive primitive sperm from stem cells taken from the bone marrow of human males. From Here
So it looks more likely that science is about to "cure" heterosexuality.