What are the causes and effects of homosexuality and what problems will it cause to people and the society and what are effects on the society and the people?

Quite a question! Homosexual behavior has been part of all human societies as far back as you can look. It has been celebrated, tolerated and banned, seen as the highest form of love and as "the love that dare not speak its name."

As far as we know, most human beings are capable of homosexual acts, even if they rarely engage in them. (This suggests to me that it functions as a form of population control.) Some people -- from six to ten percent, by most estimates -- are primarily or exclusively homosexually oriented. This percentage appears to have remained constant across time and societies.

The "problems" between society and homosexuals are caused by a vicious cycle of Ignorance, Fear and Hatred. As hatred grows, it encourages ignorance and the poison sinks deeper. Chances are, virtually everything people in America think they know about homosexuals is wrong. In recent years, however (thanks in large part to the Web!) the cycle is being broken at its weakest link -- ignorance. The more we learn about the differences among us, the stronger our society becomes.