In reply to Gav Parker:
A rhetorical question - because of course it's not wrong. But, saying that, I do think that, if you go down a bunch of grades, routes that seem "easy" can sometimes be a bit disappointing...
I enjoy being there, sharing a climb with my girlfriend who rarely climbs, watching the hawks buzzing crows in the trees below. But, if the climbing feels like a path, I often feel the need for some personal mental challenge - e.g. climbing very smoothly, moving quickly and efficiently, appearing confident and certain about objectives and rope systems rather than faffing and hesitating, and taking good care of my partner - e.g. carrying the ropes and the rack up the hill; carrying the sack and my shoes up the climb; not placing any poor gear and not placing unnecessary gear; making sure they're comfortable throughout, etc...
I've also found that the challenge and experience of covering lots of ground in a day is great. With a friend I climbed Sub-Cneifion Rib, Tennis Shoe, Lazarus, Groove Above and Central Arete, before heading down to have a go at a line up Milestone Buttress (first pitch of the Super Direct into the Direct). That was one of the best days of climbing I've ever had, for sure - a beautiful place, good lines, and lots and lots of climbing. Happy and knackered by the time we got to the Vaynol Arms!