MP3 has never been an audiophile's first choice. But it is good to have the option to burn a few MP3's straight out of Sonar if you ever need that option for low bandwidth use or compact file storage devices.
MP3 could be compared to the jpg format for photos, which is also lossy compression. It became the best way to store full color images online for web pages back in the day of slow dial-up networking. Nowadays I prefer to use lossless png for export to web images.
I think now that memory is cheaper, and bandwidth relatively unlimited, the usefulness of the MP3 format will soon run its course. The better options will become more mainstream eventually. Just look at streaming video now. A few years ago you could only get high resolution movies on that BluRay optical disk. Now you can stream ultra HD over the net!