If guitarists had it their way, they'd have multiple ribbon mics on each speaker and tube mic preamps and the sound guys would fiddle with faders for hours to coax the magic mix from the multiple mics. Trust me, I read their forums too.
Everybody gets compromised for the sake of efficiency. The reason guitars are miced is because distortion effects sound absolutely horrid direct (unless you use a speaker simulator). If Im playing guitar, Im happy miced or direct with a speaker simulator.
Bass won't ever sound as disgusting as a distorted guitar running direct. It may not be YOUR ideal sound, but it should work. If Im playing bass, Im happy direct or miced.
Plus bass is the foundation. DI provides a punchy clear foundation. Guitar sits on top and can often benefit from the smoothing, less punchy sound of a mic.