[wardaddy]

Homosexuals kill themselves like they do because they are neurotic as a rule

[Banjoguy]

they are neurotic as a rule
Maybe.
It depends on how you define neurosis.
The person who chooses or is recruited into the lifestyle is often faced with a life of torment and maladjustment, while needing to deal with serious self esteem problems as well as the destructive nature of homosexuality.
Cognitive dissonance exists continuously and to a high degree, making some lives a living hell.
So, for some, death, is less painful and an ultimate solution.