Why is Administrator role not supported?

Hi guys,
I have trouble hiding the admin bar on my site. It′s no problem for the administrator role (usually) but it′s not easily possible for all other roles, so now I found your plugin and it removes the admin bar for all roles execpt administrator?!?!? It′s vice-versa?

So why not include an option to hide the admin bar from administrators as well?
There is only a Whitelist option but as I have not “whitelisted” my admin it should not show the bar, right? But it still does, so what is wrong here?

Please let me know ?? Thorsten