When a corner can make a few seconds difference and you have many in a course, you need that trust.
Ultimately it's only a few mm's of rubber compound that keep you upright and rolling fast over 20 to 200km's. We have all punctured and watched the granny on her dikwiel roll by while we wait for the sweep wagon.
19 to 21mm tires are no longer seen as aero, they're marie biscuits with little traction. Rolling resistance is now understood and tires have kevlar compounds, thread counts and all sorts of puncture resistant properties, including tubeless which are fast becoming prevalent.
A good tire is worth the price if you value your life and live to ride. Which are overrated or underrated and why?