Full synthetic isn't more expensive when you factor in running it twice as long before changing it. I value my time, so cutting my oil changes in 1/2 is a benefit to me.
That's why I use it . That and the cold start benifits of good synthetics.
Don't forget that it retains its viscosity better than dinosaur oil in extreme heat too. Vehicle engines get really hot when you're idling in a bumper to bumper commute on a hot afternoon or anytime the temperature is in triple digits .
