They won't. Period. That's the whole issue. God has made it clear that he will not accept an active, unrepentent homosexual. No homosexual will inherit the Kingdom of God.(1 Cor. 6:9-10). Telling people otherwise is incredibly cruel. Tell them good news. Tell them there is a savior, named Jesus Christ, who has redeemed them before God if they will only repent and accept him as Lord. Now THAT'S compassion.
No it's not! They cannot .... ahem ... reproduce.