Each year the blood centers need more blood as our population continues to rise. The blood donated gets screened for disease after it gets collected regardless of who donates. There is a large number of the medical and LGBT community that feels it would be beneficial to gay people donate blood and a large population that wants to.
below are sources of history and backing on this topic:
http://en.wikipedia.org/wiki/Men_who_have_sex_with_men_blood_donor_contr...
http://www.menshealth.com/banned-for-life/
http://www.huffingtonpost.com/2013/09/15/gay-blood-donors-ban_n_3932001....
http://www.cnn.com/2012/07/06/health/gay-men-blood-ban/
http://www.medicinenet.com/script/main/art.asp?articlekey=179686
http://www.takepart.com/article/2014/02/25/fda-blood-donation-ban
Please lift the ban.