Usernames are exclusive because of the way the STEEM blockchain works, so you can consider yourself the proud, permanent owner of the @creativechaos brand on Steemit (assuming you never lose your private keys, make sure to back up your master password several different ways!)

You are more than welcome; your viewpoints and work is very interesting. I hope you persevere in sharing here as I have seen so many talented individuals come and go on Steemit over the months I've been active here. It can be discouraging how long it takes to build on this platform since it's relatively small, but it is worth it because of the amazing people here.