I was taught in pre-Vatican II times that it was a sin to waste food, harm the environment for no purpose other than harming it, like chopping down a young tree just for the fun of doing it or tearing off a budding branch in the spring for no reason whatsoever. It was under the category of vandalism.
Thus I hate cooking shows that make cooking into a contest where there is a great deal of waste for the viewer's entertainment. I hate when brides and groom smash the cake into the face of their spouse at the wedding reception. I hate when someone doesn't eat all the food on their plate and throws it away. I hate when leftovers are not creatively used at another meal.
But I was also taught by Bishop Lessard when we had a discussion in the 1980's about social sin. I was taught more about social sins and sinful structures in my liberal 1970's seminary than I was taught about personal sins.
He said to me there was no such thing as social sin or sinful structures as sin as the Church teaches is always personal to the person committing it. It isn't collective.
He said anything collective pertaining to social issues and structures has to be classified as "evil" not as sinful. The evil must be addressed by the Church collectively to call for change so that society or the Church herself changes course to prevent social evil and evil structures.
If I can vote for a candidate who supports the evil structures of government and its executive, legislative and judicial branches which support and encourage abortion because that candidate also supports the good things that the Church upholds like avoiding ecological evils, why can't I also support a candidate who is against the evil structures that support abortion but could care less about legislation eleiminating the evil of ecological disasters?
Just what would be ecological sins in the collective sense? Shouldn't it be more accurately described as evil structures and the evil of destroying the universe?