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Chaley
Lol, Presta > Schrader for bike tyres, no contest.
For a start, when you inflate a Schrader valve, you have to push air past the valve spring, in addition to fighting the pressure inside the tube. And rims have to be pretty damn wide before a dirty great Schrader hole isn't a weak spot...
Fat valves also look shit and aren't even trying to be aero. And when you want to put a little air in the tube to give it some shape so it doesn't get pinched on installation, you can do it with your mouth via Presta.
Furthermore, Presta seems French and Schrader seems American, so an easy win on that metric alone ;)
Also, bent valves is yet another thing to handily separate clumsy noobs from those in the know.