Reply To: Font Formats?

Besides what Jongware said, there's also the issue of the terms of service/license agreement with the font manufacturer.

I have used FontXChange to convert fonts from one format to another, but only when InDesign or Suitcase Fusion for one reason or another had a problem with the original format. Other than that, I don't convert any of my fonts (mainly for the reasons David listed).

And as Jongware has pointed out, there are more negatives than positives for converting all of your fonts. You won't gain anything.