Cats don't live in packs like wolves/dogs do. They aren't very social animals. What matters more is that you let it go outside every once in a while. Inside-cats will become depressed.
God doesn't exist (though there is a tiny, tiny chance there's some higher power that doesn't intervene, because the human intelligence gap is unreasonably huge, making humans undeniably special)
Every organized religion is a cult
Free will is an illusion
Aliens most likely exist, given the insane size of the universe and we know life can exist here
Humans will still always give in to their brutal tribal instincts and that's why the world is how it is
Alcohol is even worse in some sense. It is directly toxic to nerves and cells first and a drug second. If you were doing pharma-grade heroin (and could control yourself, which you cant 99% of the time, this is just to make a point) to achieve a similar high, you'd be doing much, much less damage to your body. The damage / risk to reward ratio is one of worst ever seen in recreational drugs.
Racism might unfortunately be natural and an evolutionary advantage, since mistrusting other tribes could save your life, therefore passing on this trait when reproducing. Everyone is prejudiced to some degree, even if they claim they aren't.
It goes it goes it goes it goes it goes it goes it goes it goes