Not to sound all Nasostolgic here, but dressing up for church was a great way of instilling pride and reverent behavior in people. It's a shame it has gone away.
What the hell? Churches with people dressed up tend to have them just standing around and not doing anything and not being reverent at all. As opposed to all the people I saw today in torn jeans waving their arms in the air, often swaying with their eyes closed, and sometimes jumping around. They seemed a lot more excited and worshipful than any formal dressed up church.
You would really hate hesychastic practice.