Hmmmmm the only reason to go was to take the bike .I'm sure you're right, as I said I've only driven the route to Aber and was struck by the climbs and views however, it is a busy road and it's very double white heavy so I could well imagine that the reality of riding it would not match the dream. Either way @Cuchilo it'll be worth taking the bike, if you don't you'll be sure to spot something you want to ride, but, you are either going up or you're going down, that's just the way it is.