Yes, people are responsible for their actions. Your argument is correct to some degree that we are products of our environment, but in the end it comes down to one simple thing....choice. It is an individual's choice to act on those "teachings" or not. Like the old saying: "you can lead a horse to water, but you can't make him drink". I can try to teach you how to act and think, but unless I have the correct information and understanding of what it takes to convince you, I will probably fail.

For example, I am an Atheist, but I was raised Christian. My whole family was Christian. At some point in my life I began to question what I was taught and came to a different conclusion. I did this on my own, no-one else was involved in this process.

Yes, I think people are responsible for their actions because they are the only ones who can do something about what they are seeing. You've said that it was a the environment's responsibility, but it would still be the people's choice on what their actions would be like.

Nah, I just blame the liquor. 🍺

well yeah they r control of them self they can stop them self and if they get drunk and don't have control over them self they shouldn't even drink in the first place

If someone makes his own bed, he has to lie in it. A person can't make up an excuse when something goes wrong.