Why Are So Many Christians Condemning LGB People Just Because of How They Love?

Questions about Christians condemning LGB people just because of how they love, how God can expect someone to be celibate when others are free to marry and have happiness, and why Christians seem to hate people today.  

• If God sent Jesus to die for our sins, and all who believe in him are accepted into Heaven, why are so many Christians condemning LGB people just because of how they love someone?
• How can God expect you to be celibate when others are free to marry and have happiness?
• Can you explain the hate I see from Christians today?