I'm glad you asked, because I have been wondering the same thing, but I think it's engulfing nursing as a whole. It didn't use to be run in circles, chart, more running, chart...and by the end of the shift 1 patient got 1/2 of the attention they needed, at most. I wish I could go back to 10 years ago, I actually took care of people then! You are not alone.
I recently changed hospitals and have been blessed with lower patient ratios; maybe you could scope out your area? You have experience now, so they will likely pay you more elsewhere. Also, changing shifts can sometimes help you by having a more sensible flow. Day shifts can be more hectic at the start of shift, and if the day is steady, you just feel like you are drowning for 12 hours. Night shifts have sporadic intense drama and predictable busy times, so you have to be ready for anything. The 11am, 3pm, and 11pm shifts can be awesome or the worst, just depends on your unit tends to dump on the odd shift person.
It sounds like you enjoy having some sort or rapport or relationship with the patient/family, so I believe Med/Surg is great for that, but a step-down unit may suit you as well. You'll have 1 or 2 less charts to mess with, and more frequent assessments/care, etc. I think you should explore a bit before you ditch the profession completely. If you do seek out another unit or employer, ask around and avoid the toxic nurses!
As for the complaints, that is interesting. Perhaps there is a way you are doing or not doing something? You should have been given constructive feedback on your performance or offered advice for moving forward.
I hope I have helped a bit! Good Luck to you!