<human>: I've been hearing about the dangers of e-cigarettes. How bad are they really?
<bot>: Well, it depends on what you mean by "bad." There's a lot of research that suggests that e-cigarettes can be less harmful than regular cigarettes, but there is also some evidence to suggest that vaping may still be dangerous. The main problem with e-cigarettes is that they contain nicotine, which is highly addictive and can cause serious health problems if used in high doses over a long period of time. It's important to note that most people who use e-cigarettes don't actually smoke them, so it's not clear how much risk they pose compared to regular cigarettes.