Actually I tend to agree with PB about the elitist thing. Example, in our case while we are quite some few NMs up the harbour from the heads it's all quite wide enough to sail off the mooring , down the harbour and out to sea. For that matter you could easily spend the entire day inside the harbour but I find the commercial traffic, stink boats and racers to be a tad irritating.
On the other hand it is not at all unusual in Sydney during the summer for there to be absolutely no breeze at all until midday, so it's often convenient to motor down the harbour in the morning before heading outto sea as the breeze builds.
We also usually sail two handed and if we had a larger vessel than Raven's 34' I think we could well decide to motor until we cleared the heads.
Horses for courses.
"Do you think God gets stoned? I think so... Look at the platypus." Robin Williams.