Is suicide such a bad option

I just don't think I can handle being gay. I've known for a long time, but I've only recently told anybody, and a very limited amount at that. Even though my friends have all been very accepting, I just can't do the same for myself. I don't know why, but being gay makes me feel like I've doomed myself to a life of sin and impurity. I don't know what else I can do to change how I feel. I've already done some dangerous things that put my life at risk, to the ire of my best friend. He actually had me move in with him to help me out when I'm really down. It's helped, but I can't get rid of this hopelessness. It just feels like it would be so much easier to kill myself rather than deal with this for the course of my life. I'm sure that it would hurt my friends and family, but I feel like they would get over it after some time. I don't know what else to do.