Huh? Presta valves are weaker and less reliable, and are easily snapped off if a ham-fist is careless with the pump head. Schrader is immune to these issues.

I personally prefer Schrader and would use it on everything but it doesn't work for deep rims and is a poor choice for narrow rims as the larger hole weakens the rim too much. It also doesn't exist with tubulars... I've gotten good enough at using Presta valves that I don't have problems with them anymore, but they are definitely more finicky than Schrader.

I've frequently heard the "presta is easier to pump since there's no return spring" but I've never felt this in practice. Using hand pumps or floor pumps.