I don't know if there is any big advantage of presta over schrader. Or visa versa.
I do have to let the air out of my rear wheel to install/remove, and the presta is handy, although it only takes seconds more to release the air from a shrader valve.
I have considered a bike build for a friend's 88 yr old mother. I don't relish the idea of teaching her about presta valves, so she'll get the schrader too.