Why so little of Ben Marcus?

This team is very offensively-challenged. Putting it more bluntly, we can't hit the broad side of a barn. So why is Ben Marcus not playing more? He is shooting 73.5%, for crying out loud! He has missed only nine shots all season. Granted, I have not seen him play, and his game may be very deficient in other respects. But the kid makes his shots. Right now what we desperately need is someone who can MAKE SHOTS!