We always hope for a confirmed ticket when booking a train ticket, but if we get an RAC ticket, we wait until the train's departure time, hoping for confirmation. Even if the ticket isn't confirmed, we're happy with RAC as it at least guarantees a seat.
Many people reserve train tickets for a berth, hoping to lie down comfortably and travel without fatigue. They prefer a confirmed reservation but are often content with RAC if confirmation isn't possible.