Why do British people like to talk about the weather?

Everyone will speak kindly. When we meet every morning in China, almost everyone will say "Good morning", and the most important sentence is "Have you eaten?" . No matter where you are, you will ask this question, even if you meet it in the toilet sometimes, so many foreigners don't quite understand why China people ask people if they have eaten in the toilet. They don't know that this is a kind of pleasantries of China. In fact, this is not only the case in China, but also in other countries. Take the British people today as an example. Why do British people like to talk about the weather? There are several reasons. The first reason is that Britain has a temperate maritime climate, which is humid and foggy all the year round. The weather there is changeable, and you can experience several kinds of weather in one day, so it is not surprising that British people take umbrellas everywhere. And this changeable weather is also a good talk. The second point is that British ministries like to talk about personal things. If two people pass by, what is the most appropriate to talk about? Needless to say, it must be the weather, so there is nothing to say, and it will not involve personal privacy issues. The third point is that British people just like to talk about the weather. You have to ask why, there is no reason, just like we sometimes do things without any reason, just because we like them. Is that weird?