This confirms my biases, so I thought I’d share it:

Churches are not carpeted.

While rugs and runners may occasionally enhance liturgical place by adding festal color, carpeting in quantity wearies the eye and muffles sound. Even with a good electronic sound system, which is a rarity, a carpeted church often has all the acoustical vigor of an elevator. The ambience of a carpeted church, moreover, is too soft for the liturgy, which needs hardness, sonority, and a certain bracing discomfort much like the Gospel itself. Liturgical ambience must challenge, for one comes to the liturgy to transact the public business of death and life rather than to be tucked in with fables and featherpuffs. The liturgy challenges what Quentin Crisp calls the general notion of Christianity as a consolatory religion, as something nice Jesus of Nazareth could say to those who turn to him for comfort.

Source: Elements of Rite: A Handbook of Liturgical Style – Aidan Kavanaugh – Google Books