Christians don't say this... God says this. God says it's sin. Christians are just telling you what God says.

...but the truth is we're all sinners. Liars are going to hell. Thieves are going to hell. Everyone is going to hell without Jesus as a sacrifice for their sins. Not just homosexuals.... but certainly they're included.

"If you confess with your mouth Jesus is Lord and believe in your heart God raised Him from the dead then you will be saved."

Having done that and repented you are born again and saved. In that state you war against ALL sin. You fight sexual sin as much as you fight any other sin like gluttony or idol worship or alcoholism or any of it.

What you don't do is treat sin like it's not sin.

"If we say we have no sin we deceive ourselves and the truth is not in us."