As the Quran says: "Oh, you who believe! Fasting is prescribed to you as it was prescribed to those before you, that you may learn piety and righteousness" [Quran 2:183]
As a non-religious gay I probably wasn't invited anyway. But this kind of thinking is what leads conservatives to so much repression and hate. The idea that the wants and needs of your body are something which the mind must actively fight. That the scratchy, ill-fitting wool sweater of your culture is something that you must keep on at all costs. And it leads to resentment of people who are not under such self-imposed restrictions.
There is a reason in queer culture that 'shadiness' is a bigger sin than anger. Shadiness is what happens when someone represses their true feelings. Those feelings don't go away though, they just resurface in other unexpected and non-adaptive ways.
However, raiding the cabinet of historically religious practices and stripping god out of them can be helpful. A lot of things we do on impulse don't actually make us happy, and cutting them out for a bit can be a good way to examine whether they've become unhelpful/unskillful habits. I don't think drinking is inherently bad, but "dry January" can be a nice way to check that I'm not developing a dependency. I'm glad I have a smartphone but I do find that periodically being completely away from screens is a good check. Sex, food, other substances, media, can all be good but can also become parts of habits that don't actually lead to happiness. Temporary self-denial can be a useful tool in reworking one's relationship to these, even if you're definitely going to keep them in your life in some form.
Murder? Mayhem? Destruction? Greed?
I agree homosexuality is a fine thing, but your comment is altogether far tooo broad.
Societal morals are often about denying ourselves things we want to do: often because our actions affect others or offend others, but also often for no strong reason at all. Virtue is almost defined by holding ourselves back from unvirtuous actions: can virtue exist in the world if we can all do whatever we will?
> Murder? Mayhem? Destruction? Greed?
The bar is so low you consider not being a dangerous sociopath a virtue?