what's the deal with micro blogging

what is everyone's fascination with this new way of blogging? tiny little posts. many of them. i understand the need for people to just be out there as much as they can for search engine reasons, but as i read through the different statements that many people post, to me it seems like people talk about things that hardly no one cares about. people talking about what they eat, people talking about what sickness they have, people talking about what kind of trash bags they have in their kitchen garbage can....does anyone really care? if you were to tell me that every individual person does it for different reasons, like for example one person might only be conversing with their own friends and family and no one else....perhaps someone else might only be conversing with their own coworkers at their job....and those are the right reasons to be saying random things back and forth, but if you were to say that a majority of the people are trying to tell the whole world about the colonoscopy they had last Friday, then i would say B.S....probably 99% of the population who reads those posts don't care about 99% of everyone's messages....they probably only care about 1%....they just read from a select few people.....to me that is just strange though.....why do many people want their personal life out in front of everyone for everyone's reading pleasure? have people forgotten about email and instant messengers?