I wouldn't call a 57 "boring"...but the fact that everyone just about feels they *must* use a 57 because that's what everyone says to use....is kinda' boring.
While agreeing that many a guitar cab was recorded with a 57 over the years with good results...I certainly don't think that a 57 sounds better than any other mic for guitar cabs.
It's like anything else...you pick a mic and an amp/cab, and then you dial 'em in, and it's possible to do that with a lot of mics.
Side-by-side or one by one, put up a 57, cascade, 609, 441U, D1000E in the same spot in front of your chosen amp, and have the amp set where you want it. Now without listening to what the mics are picking up...record the same thing with each mic.
Then sit back and audition all of the tracks and tell me which one you like best.
I've done that, a few times, with a few amps....and out of that bunch of mics, the 609 was the last choice, followed by the 57....but like I said, I'm sure if you focused on making the amp and 57 work well together, it is possible to dial them in, so anyone that likes using them, no need to toss 'em out just based on what we are saying here.