I actually used to think just like you. After I discovered Zeppelin and Floyd and P-Funk, I thought that music couldn't get any better. But this is a fallacy, and I realized that I was missing out on great shit after I stopped listening to the radio - fuck you Clear Channel.
I forced myself to listen to post 2000 albums almost exclusively in the past six years, and this is all but a small sample of the great music that's out there:
Adele - 21
Animal Collective - Merriweather Post Pavillion
The Antlers - Hospice
Fiona Apple - Extraordinary Machine, The Idler Wheel...
Arcade Fire - The Suburbs
Arctic Monkeys - Whatever People Say I Am, That's What I'm Not; AM
Beck - Sea Change
Big Boi - Sir Lucious Left Foot
The Black Keys - Attack & Release
Bloc Party - Silent Alarm
Manu Chao - Próxima Estación: Esperanza
Crystal Castles - Crystal Castles
Daft Punk - Discovery, Random Access Memories
Danger Mouse - The Grey Album
Deerhunter - Halcyon Digest
Deftones - White Pony
Deltron 3030 - Deltron 3030
Eminem - The Marshall Mathers LP
Lupe Fiasco - The Cool
FKA twigs - LP1
The Flaming Lips - Yoshimi Battles the Pink Robots
Franz Ferdinand - Franz Ferdinand
Gorillaz - Gorillaz
PJ Harvey - Stories from the City, Stories from the Sea; Let England Shake
Interpol - Turn On the Bright Lights
Justice - Cross
Kaputt - Destroyer
Killer Mike - R.A.P. Music
The Killers - Sam's Town
Kendrick Lamar - Section.80; Good Kid, M.A.A.D City; To Pimp a Butterfly
LCD Soundsystem - Sound of Silver
Madvillan - Madvillany
John Mayer - Continuum
MGMT - Oracular Spectacular
MIA - Kala
Modest Mouse - Good News for People Who Love Bad News, The Moon & Antarctica
My Morning Jacket - Z
Norah Jones - Come Away With Me
Outkast - Stankonia
Passion Pit - Manners
Phoenix - Wolfgang Amadeus Phoenix
Queens of the Stone Age - Rated R, ...Like Clockwork
Radiohead - Kid A, In Rainbows
The Roots - Game Theory, Rising Down
Run the Jewels - RTJ, RTJ2
The Shins - Oh, Inverted World
Spoon - Kill the Moonlight
Surfjan Stevens - Illinois
The Strokes - Is This It
Swans - The Seer, To Be Kind
Taylor Swift - 1989
Justin Timberlake - FutureSex/LoveSounds
Vampire Weekend - Modern Vampires of the City
Kanye West - Late Registration, Graduation, My Beautiful Dark Twisted Fantasy
The White Stripes - White Blood Cells, Elephant
Amy Winehouse - Back to Black
Wilco - Yankee Hotel Foxtrot
The xx - xx
Yeah Yeah Yeahs - Fever to Tell
This is only a tiny fraction of the good music out there. I already know I'm going to catch flak for forgetting others, and that's a GREAT thing. If I can rattle off all of these albums and people still feel compelled to call me out as a phaggot, that just goes to show that music never died.