Some people don't like answering calls in public because they're worried about their privacy. They might need to talk about personal stuff that they don't want strangers hearing. It can be really awkward to share private details when you're surrounded by people who might be listening.

Another reason is social anxiety. Some people get really nervous about speaking in public. They worry about how they sound over the phone and think that others might be judging them based on their conversation. It can make answering calls in public really stressful.

Also, some people are just really considerate of others. They know that talking loudly on the phone can be annoying to those around them. So, they avoid answering calls in public places to not disturb others and come off as rude.

Lastly, the environment can make it hard to take calls. Places like busy streets or crowded buses have a lot of background noise, which makes it tough to hear or be heard clearly. This can make the call feel rushed and distract from the conversation.