I am willing to pour crude oil in my car and then talk here about synthetic oil.
It is not that i am biased towards synthetic oil. But it is the advantages of synthetic oil over basic oil which make me move more towards synthetics. In toyota car book , there is no mention of using crude or synthetic oil , only thing mentioned or recommended is the Grade of oil. And once you see toyota making/repacking/packing Fully synthetic oil then everyone will start recommending it.
And about wikipedia, We can have something else as a reference ,
Synthetic engine oil - Shell Pakistan
In each of the above links it states synthetic oil reduces engine wear and tear over long term due to its superior lubrication. Contains less impurities in it and can stand extreme load conditions.
Nothing is Personal Sir , We all are learning