Having the responsibility but not the authority; means you will get paged ad-nausea, and you can't fix bugs. This drives burn-out, both temporary and permanent.
Having the authority means you will take more responsibility for the system. It also means the system will become better and more reliable.
At BSDCan, I'll be giving a tutorial "BGP for Sysadmins/Developers". This will be my first class I've taught solo.
My future intentions for this is to teach networking and #BGP for people that know nothing about networking. I found it somewhat difficult to move from Sysadmin to Network Admin, and I want to help others cross over if they want.
Not to mention, having a solid understanding of networking will help you with computers in general.