Yes! To all of that! This is why we all end up here. TouchstoneRN hit the nail right on the head. We have so much more autonomy than the nurses on the floors (one of the reasons I left the floor) but we are never alone. Our ER always has 2 MDs, one of whom does peds, and from 11-11 there's another one in fast track. Our fellow nurses may be dealing with anything from a PE to the anxious parents of a healthy new baby, so often there's lots of help from there. The ADD tendency to immediately direct your attention somewhere else is a highly prized asset.
When we don't know something, we are immediately drawn in and taught by MDs and nurses who take pleasure in sharing their knowledge. When we know exactly what to do, we are patted on the back. All around us are nurses of every specialty- ICU, L&D, urology, cardiology, peds, and several new NPs who come play with us a couple of times a month. If you don't know something, there is someone in spitting distance who does. And within the week that nurse will come back to you for your opinion based on your unique experience, or your outstanding IV-starting skills. (Expect to be called to the floors to start IVs on difficult patients.)
When EMS calls with a code, everyone who can tidies up their pts and goes to the resus room to help moving out the pt currently in it, locate the MD, get paper for charting, open the crash cart, lay out supplies, calls RT. Losses bring sympathy, saves earn you a pat on the back, including one from the MD.
Maybe when I am old and arthritic and crave calm and order, I'll consider working somewhere else. For now, this is home, my co-workers are family (with the occasional black sheep) and I wouldn't hang my stethoscope anywhere else.