You may simply identify as "straight", but there is an enormous community of marginalized people out there who fall on a different spectrum of sexuality- and they need allies! Stand with them! Learn how to support them, and help to normalize what has already been normal to the LGBTQIAA community for a millenia. This website has resources to educate, and guide you in this. Being here is a great first step.
LGBT adolescents have the highest rate of suicide attempts (Bagley, Christopher; Tremblay, Pierre (2000). "Elevated rates of suicidal behavior in gay, lesbian, and bisexual youth". Crisis: The Journal of Crisis Intervention and Suicide Prevention.), which scientific research indicates is linked to homophobic attitudes and heterosexist discrimination (Study: Tolerance Can Lower Gay Kids' Suicide Risk, Joseph Shapiro, All Things Considered, National Public Radio, December 29, 2008). Acceptance and understanding will quite literally save lives!