Sorry man, it rocks. And it is one piece of software that doesn't really get old and will stay with you for the rest of your career using DAWs. It's that good, it works with any DAW, and this is a great time to be getting it. More and more DAWs will start to support ARA and you get the full version, not locked to Sonar...
That said, "buy it when you need it" can also be a good rule. If you'd be getting it purely because of the "hip" factor, maybe you could wait for the next sale.