As for us, we owned a tiny motor home for 24 years without a dinette. Actually it did have a large dinette, but we kept it setup as our primary bed all the time so we did without dinette conveniences. Back in 2007 when shopping for a replacement motor home, our primary goal was to have both a dinette and a double bed on the main floor. Our 2350 was the winner. We love having the dinette available all the time. We would never do without it again.
If anyone decides on ordering any PC with a dinette, I highly recommend getting the leather-like cushions with memory foam. We ordered ours in cloth with standard foam. Both cloth & cushion turned out to be uncomfortable. Years later we bought the upgrade cushions and were "Wow'd" by the improvement in comfort. They even provide a little more elbow room because they are a little thinner. I never have to get up anymore to rescue my butt or back. Our dinette can't compare to a couch for comfort, but there is always another reason to get up before I get to that point. Having the extra comfy seat by the door is nice when one of us wants to kick back and relax.