Its mainly for culture, lifestyle, and bragging rights. For Asians from the tropics, the climate is a bonus. There is actually no right or wrong. South East Asia is great, but Western countries are just a different experience.
I have enjoyed travelling to Western countries too, but I don't worship the West. I know that Paris has some great points of interests, but there's plenty of ugly under the surface too. Nevertheless, if there are SEAsians looking for cooler climate, culture, modern cities, and photographs, China is the better choice for today. Its closer, cheaper, cleaner, safer, and minus the racism.