Talking about our views and trying to impress them on others are very different things. Unless you have any actual examples of atheists trying to "teach atheism" or trying to de-convert people, then you don't have much of a case.
As for your conversations, I suspect that it is your own views on the issues that contribute to your conclusion. To explain, for every conversation you have where you see an atheist as having ended it badly, I've had one where I see a theist ending it badly. People who have opposing viewpoints (such as theists / atheists) will always find it hard to have amicable conversations with each other on those viewpoints.
For theists, it appears as if the atheists are at fault. For atheists, it appears as if the theists are at fault. Put simply; your interpretation of how a conversation went is very subjective, and largely depends on your own personal beliefs.
As for your conversations, I suspect that it is your own views on the issues that contribute to your conclusion. To explain, for every conversation you have where you see an atheist as having ended it badly, I've had one where I see a theist ending it badly. People who have opposing viewpoints (such as theists / atheists) will always find it hard to have amicable conversations with each other on those viewpoints.
For theists, it appears as if the atheists are at fault. For atheists, it appears as if the theists are at fault. Put simply; your interpretation of how a conversation went is very subjective, and largely depends on your own personal beliefs.