Your lawyer asked that question, not the judge ? Your lawyer could be assuming that your record spells out certain facts about your disabilities that the judge just isn't seeing. Why the judge isn't seeing that, we just can't say. Maybe the judge shouldn't be a judge. Maybe the record just isn't as clear as it should be. Maybe there is a conflict in some of the documentation.

The judge can also consider what they can see on the day of the hearing. For instance, if an applicant's (and I'm absolutely not saying this is you, just an example of what could go wrong) documentation says they can ONLY sit up for an hour, but the judge sees them sitting, in no apparent distress, for 2 hours in the waiting room, then walking into the courtroom and sitting for the 1/2 proceedings, they might think the doctor who said that person could only tolerate being out of bed for one hour was exaggerating the patient's condition. The patient didn't do anything wrong. The record looks specific enough, but there is a conflict between what the record says and what the judge can see for himself.

There are so many potential issues, like that or like lacking documentation, that no one here can tell you exactly why you were denied.