Although the causes are not known, some researchers believe that one's basic sexual orientation is predisposed at birth While these affectional inclinations may not be recognized or acknowledged for many years, once established, they tend not to change. Preference implies choice, while orientation does not. Sexual Orientation is a term used instead of sexual preference by most gay, lesbian and bisexual people because it better represents their life experiences. There is no set age at which a person becomes aware that she or he is lesbian or gay. Some gay, lesbian and bisexual people become aware of their orientation during adolescence or earlier.
People can realize their sexual orientation at any point during their lives.
Because of strong societal pressures to be heterosexual, some people don't identify as gay, lesbian or bisexual until later in life, perhaps after they have been heterosexually married for several years. This would equal 26 million per the U.S. 1990 census. Gay men and lesbians are found in many walks of life, among all racial groups, and at all socioeconomic levels. Gay men's and lesbian's personalities vary as widely as do those of heterosexuals. Lesbians and Gay men are as varied in their dress, mannerisms, and lifestyles as are heterosexuals.