Heya welcome
You're very enlightened, you already have a great analysis! Those two quotes at the end are on the money.
If you want to point out how "religious morality" is nonsense, go to them with a list of things the bible says you should do and ask why they don't do any of them. Such as:
If someone picks up sticks on a Sunday, they should be stoned to death.
You're allowed to buy slaves, and to beat them up as long as they don't die.
If children are being unruly, they should be taken outside the city and stoned to death.
If an unmarried woman is raped, the woman is forced to marry the rapist. His only punishment is to give a small payment to her father.
I could go on forever. What religious people do is follow their holy book when it agrees with them and ignore it when it doesn't. Or make ridiculous nonsense arguments as to why they don't have to do those things anymore, because they know better than God. So really, they are just using their own morality just like an atheist would, but claiming religious righteousness when it lines up with them. The worst part is that religion can make a good person do a bad thing, something they would otherwise think is wrong, through the pressure of religion making them thinking it must be done.
As for homosexuality... as I'm sure you're aware, as any half-intelligent honest person knows, it's not a choice. It's entirely genetic. We are born that way, it's been scientifically demonstrated for a long time now. And of course there is nothing wrong with it. If they really think it is a choice, then to actually know this, they must have chosen themself to be gay at some point, at least long enough to convince them it is possible. Have they done that I wonder?
You can get any number of resources to back up this being genetic and they are absolutely full of shit. Let us know if you need any help with links and so on 
Good luck and enjoy the forum!

If you want to point out how "religious morality" is nonsense, go to them with a list of things the bible says you should do and ask why they don't do any of them. Such as:
If someone picks up sticks on a Sunday, they should be stoned to death.
You're allowed to buy slaves, and to beat them up as long as they don't die.
If children are being unruly, they should be taken outside the city and stoned to death.
If an unmarried woman is raped, the woman is forced to marry the rapist. His only punishment is to give a small payment to her father.
I could go on forever. What religious people do is follow their holy book when it agrees with them and ignore it when it doesn't. Or make ridiculous nonsense arguments as to why they don't have to do those things anymore, because they know better than God. So really, they are just using their own morality just like an atheist would, but claiming religious righteousness when it lines up with them. The worst part is that religion can make a good person do a bad thing, something they would otherwise think is wrong, through the pressure of religion making them thinking it must be done.
As for homosexuality... as I'm sure you're aware, as any half-intelligent honest person knows, it's not a choice. It's entirely genetic. We are born that way, it's been scientifically demonstrated for a long time now. And of course there is nothing wrong with it. If they really think it is a choice, then to actually know this, they must have chosen themself to be gay at some point, at least long enough to convince them it is possible. Have they done that I wonder?


Good luck and enjoy the forum!
Feel free to send me a private message.
Please visit my website here! It's got lots of information about atheism/theism and support for new atheists.
Index of useful threads and discussions
Index of my best videos
Quickstart guide to the forum
Please visit my website here! It's got lots of information about atheism/theism and support for new atheists.
Index of useful threads and discussions
Index of my best videos
Quickstart guide to the forum