For me this would be a pure time/fuel consumption matter. There is no safety aspect to this depending on how the flap mechanism works.
I do not check flaps during preflight on my Cessna as I know that in case they don't work, I would do the flight anyway and if they fail during approach, I would just land without (which I practice regularly). The flaps are mechanically linked so asymmetric flap deployment is not an issue.
My old plane is a C172M with 40° flaps. I was always concerned about having to go around and then flaps failing to retract. Depending on the weather and weight, a C172 is impossible to keep in the air with 40°. I guess that was one of the reasons why Cessna limited the flaps to 30° in the C172N and newer. I never used the 40° after having tried to go around with flaps fully retracted.