Included in your output is this feedback about running PulseAudio as a system user:

> Please read http://www.freedesktop.org/wiki/Software/PulseAudio/Documentation/User/WhatIsWrongWithSystemWide/ for an explanation why system mode is usually a bad idea.

The alternative is run PulseAudio as the user you login as. How to do that is a question that [has already been answered](https://unix.stackexchange.com/questions/75404/user-systemd-pulseaudio-service).