Is homosexuality a mental illness or a natural feeling?

Homosexuality: Homosexuality is a common and normal part of the human experience. Homosexuality is found in all species on the planet. It is not a mental illness. I would not use the word 'feeling' to describe the real part of humans that long for love and intimacy and sex. Human sexuality bring us spirituality, health, love, intimacy and connection. It makes our lives worth living. It brings us family.