I would like to use Elementary as default OS, but for the moment there are still a bunch of little obstacles to do so.
I save my official and professional mail-messages as text. This because I want to back it up and be able to search and read prior mails, without the use of a mail-client.
I think using Elementary while installing a bunch of other applications, is pointless, because then it is easier to use a distro which already has all those applications. The beauty of Elementary is it's simplicity, which would be lost if I stack it with other applications besides the original ones (this is different for applications which are just missing).