Eh. It's not that bad. And certainly my experienced colleagues would disagree with you. No disrespect intended.
I'm not too convinced about needing to see a lot of normal presentations. Or rather, I'm not convinced that being in GP is advantageous in that way. I mean, I do a lot of physical exams, and as an entire collection, I see plenty of normal heads, eyes, ears, skins, abdomens, hearts, lungs, etc. Your comment sorta suggests that every part of every animal we see on ER is aberrant in some way, so we're never learning what is 'normal' in an animal, and that's not the case. Sure, there's usually something wrong with each patient, but <most> of each patient is normal. Additionally, because the majority of my patients are sick in some way, I get to see a lot more abnormal bloodwork, radiographs, ultrasonography, etc., than a GP - so you learn quick on ER. Actually, my comment was more to indicate that there are a lot of variations of normal, and knowing that will help a lot so as to help not over-interpreting atypical as pathologic.
This job has been great for me and to me, and when I review my more difficult cases with my mentors there haven't been any major "oops, boy the new grad really screwed that one up!" situations. Definitely some disagreements about dx/tx, but nothing that's changed an outcome or was even remotely close to not approaching standard of care. And it's not that hard to be smart - you get a tricky case, you call someone. Truly acutely critical cases really aren't that hard to manage - you take a deep breath and focus on the basics - breathing, beating, (not) bleeding. Solve those problems, do no harm, and your patient gets to live until it can get to the GP or the right specialist, or you fix it and send it home. It's the complicated internal medicine cases that suck, and those end up in the hands of an IntMed specialist or back at the GP anyway once you stabilize them and start them down the right path.
I'm always surprised when GP docs call me to transfer a case... it will be some IMHA or hemoab or something and they sound all panicky and start spewing randomness about "ohmygod they need a transfusion now now now what do I do it's gonna die!!!!!!!" and I'm sitting there thinking "Just send it over. I don't know why you're getting anxious about THOSE cases considering all the crappy chronic internal medicine things you guys deal with that make ME panic when I think about them." Personally, I think a GP's job sounds 10x harder than what I do. It's all a matter of perspective and what you deal with every day. I get sweaty thinking about how to deal with chronic ear problems or IBD or lymphoma. A collapsed dog with pericardial effusion, a HBC that's broken in a billion places bleeding all over, an IMHA at 6% PCV, a cat that can't breath, a FB or GDV, an ibuprofen ingestion of 750mg/kg (yesterday!)....... those are pretty straightforward in comparison. It's calming to get those cases, because we get them every single day. As I said, I think it's dealing with the volume, speed, and stressed owners that is far harder than dealing with the medical or surgical cases (most of which you can get help with from books or VIN, even if you're alone). Trying to decide which patient is dying faster to know who gets priority of your limited resources, for instance. It's those reasons that I think it's a bad fit for 95% of new grads. The medicine is easy, it's the clients and staff that are hard!
The GP, on the other hand, has to manage 10x the number of problems I do, they have to see two to three times the number of cases per day/shift, they have even less time than me for writing records and calling owners, and on top of it they have to recollect all their clients to <some> degree so when they walk in the room they can keep that relationship. My job feels cushy compared to what I hear GPs do. Difficult client for me, on the other hand? Whatever - you're out of my hospital in an hour and out of my mind exactly 1 second later.
Nope. A GP job scares me. This job is way more straightforward. The only real compelling reason I have to leave it would be financial (to move into practice ownership) and scheduling (to work regular days and ditch this crappy day/swing/night shift stuff). It's impossible to get healthy regular sleep patterns doing ER work (at least in my current gig), and I have some very real concerns about whether it's worth it long term considering all the evidence about chronic health issues with poor sleep habits.
I agree that it requires a calm head and an ability to deal with stressful clients. No doubt. And anyone considering doing it should very objectively assess whether they have those capabilities, or it will be overwhelming.