I haven't watched the series in over a decade so I have no idea how it's aged (or how my tastes have changed as I've aged) but I remember the early seasons being quite good. Gray's Anatomy was really popular the first few years that it aired, and at least at the time I thought it was deservedly so. I think I dropped the show around season six? It was getting too soapy/ridiculous and the plot was starting to go in circles. They ratchet up the tension really high pretty early on (both on the medical drama and doctor-relationship drama sides) so the writers inevitably set themselves up for failure, because this isn't a shonen power fantasy, you can't just keep driving things up to higher and higher stakes and still remain within the confines of reality.

For instance, in a very early season there's a really bad train crash where a bunch of patients flood into the hospital and I remember it being a huge climatic thing with some fantastic episodes. Then in a later season they have a bad ferry crash plotline that falls flat because they already did the train crash, and the emotional impact of this huge public transportation disaster was significantly diminished by a sense of "didn't we go through this already?"

I cannot believe that the show is still going, mostly because I'm amazed they have any audience left.

There's an episode in House where they do that. But it turns out that it's all just Houses imagination anyway, and so that makes sense because really everything is about him. So it makes sense that nobody cures the patient if he isn't there.