We talked about this on our WBPC Cruise (14 nights)...we had planned to sail in an inside room as we are not really people to just hang out in the room, ever, and the price made the vacation possible. However, a military rate was offered on a deck 2 midship oceanview room for a really great price, so we took that. Typically, we like to be out and about exploring and having fun. With that, we both agreed that for 3-5 or even 7 nights an inside would have been just fine. But the second half of our cruise, we found our family in the room more often to just relax and decompress. An inside room might have felt a little depressing. I am sun dependent, so we decided that if it was a shortie, we could do an inside, but anything longer and we would need a window and that applies to any cruise line for our family.
Personally, I have sailed with a verandah and saw no point. We never used it, except to go out and look for a minute or two.