When wrath of the lich king was released everyone spoke of world of warcraft's imminent demise.
When cataclysm released everyone stroked each other and nodded at the idea of the game laying on it's deathbed.
At mist of pandaria release, people finally learned to keep their mouths shut.
While the game has indeed lost a ton of players over the last few years, it is still going strong. You won't have a problem getting into a battleground there, selling on the auction house or finding an arena partner or raiding guild.
The reason I bring this up is because people love to sob and preach about subjects which they know nothing about yet allow themselves to fall under the idea they do know about it. It's extremely difficult to predict the future of 07, the right update can make the game flourish and vice versa. Everyone who reads this comment is going to die one day, everything in this reality is affected by time and as such the things we create will be affected by it and one day be obsolete. Try to spend your time enjoying 07 and riding the nostalgia wave instead of worrying, it leads to nothing but unnecessary stress=)