Which actions of ours are offensive towards gods? (Drinking, Dating, Masturbation, eating non veg etc). Can anyone provide me a list with some explanation? Are these sins?
God is a non-doer and is unattached to the Universe and its living beings. It's primordial nature, the shakti of Brahman, which brings forth the creation. Brahman does not interfere in the creation.
Resorting to Prakrti, Nature, which is My own Power, I send forth again and again this multitude of beings that are without any freedom, owing to Nature's sway over them.
These activities do not in any way bind Me, because I remain detached like one unconcerned in their midst.
The net result of God's non-attachment is that any paapa we do, only damages us by accumulation of bad karma and destruction of our spiritual nature. God is not angry. Ishvara only distributes the fruits of our karma.
Is there a list of our sins?
Lust, anger and greed - this triad leads to the destruction of man's spiritual nature. They form the gateway to hell; they should be abandoned.
Vidura on Gates of hell
Great fear springeth from these three crimes, viz, theft of other’s property, outrage on other’s wives, and breach with friends. These three, besides, being destructive of one’s self, are the gates of hell, viz, lust, anger, and covetousness. Therefore, everyone should renounce them.
[Mahabharata, UdyogaParva, Section 33]