[DrSiemer]

Posting in a chat demands immediate attention from the participants. It feels "pushy"; I don't want to disturb my friends with my random ramblings.

It's also not really possible to compose a single, long, properly formatted story, interspersed with images, in chat. Every separate post will be a call for attention, if they have not muted you yet.

Ignored push messages can easily turn into forgotten messages. There is no "mark as unread".

Chat does not provide you with an experience of reading carefully crafted posts, on a moment you choose to spend reading only about what your connections have been up to.

Knowing what is happening in the lives of friends and family living in other countries is the only thing I really miss since I stopped using post style social media. Sure, we can chat, and sometimes we do. But usually we don't. You're just not going to chat about random little things in your life with people you don't see with some regularity.