1. The character of my bass amp is just as important as the sound of my guitar amp. 2. The full sound of my bass amp behinds me inspires me to play better. No in ear will give you the big full sound of your cabinet behind you. 3. You can dial your sound more from an amp than a DI. 4. You get the feeling of the crowd and room where you hear everything. Just give me a monitor in front of me. I get it, you don't want too much volume on stage which makes things more difficult for the sound people, but really.......a DI for live?