Look, I get it, I was like you once. I started with my first Grado when I was still in high school (an SR-125). It only took a few years before I blew through my savings by acquiring an RS-1. I even bought an RA-1 to power it. Every day I would listen, sometimes for hours on end. Got others hooked too, told them that my Grados were the pinnacle of audio, that they didn't know what they were missing.
But I'm here to tell you that I got help, that there's hope. You don't have to live with that 2khz spike, you don't have to have the musical perspective of being 2/3rds the way up the performer's ass. You too can have soundstage, you too can enjoy subbass on a headphone. I know it can be scary at first, but sometimes you have to be able to accept that others just want to help. All it takes is to admit to yourself that you're tone deaf and ask for help from a higher power (it doesn't have to be God, it can be Jude or Tyll or any other Guru). Better yet, go to a local head-fi meet listen to some rigs out there, see if anything catches your fancy.
Make a searching and fearless inventory of sound quality attributes you would like in a headphone. It's ok to want it all: even frequency response, low distortion, comfort, imaging, resolution. Maybe there isn't a perfect headphone out there, but I guarantee that there are those which you'll like more than any Grado. And if you absolutely must have that basement Brooklyn charm, why not go for one of Uncle Joe's far superior early models? The ones before John decided to add metal hubcaps to the cups to "suppress resonances". A stone-age HP-1 will easily beat anything in the current lineup.
Humbly ask for a headphone with all of the strengths you'd like but with none of Grado's weaknesses. If it's the detail that drew you in, try an electrostat. The ESP950 is good and you can find one for under five hundred if you look around. If you want a smooth, fatigue-free listen then try an HD600, or even a second hand HifiMan or Audeze. For bass without limits your options are better than ever with newer planar magnetics coming out to complement the selection of budget vintage ones like the Yamaha YH100s.
Soundstage? HD800, or even an AKG 601.
Through clinical listening you can improve your conscious contact with music appreciation. Make a lit of all the people you've wronged with Grado proselytization and resolve to make amends by spreading the good news that good sound is available outside of a century-old radio headpiece form factor!