For anyone (male or female) the looks of a curved, or any, penis is subjective.
Bud's is as straight as a die, but there's a guy called Jay who's cock bends almost at a right-angle to the left.
The straight one might look conventionally more attractive, but sometimes it's the little differences and even faults that give character to penises and even people's faces.
You would think that a cock with lots of thick veins and a brutal looking head would be ugly - and it is - but strangely beautiful at the same time.
The other thing about a curved penis is that it can hit the G-Spot more effectively in certain positions without needing a pillow or two under the buttocks.