I replaced my shower door with a shower curtain a while ago for several reasons one of which it is easier to clean.
For me, disadvantage of not having a shower door is it takes longer to keep water from getting out of the shower. This is because I have to adjust shower curtain to keep water from getting out of the ends.
What I find helps with adjusting the shower curtain is to rotate the rings at each end of the shower curtain 180 degrees inward, so the shower curtain curves inward at each end. This make it easier to grab and keeps the water in the shower.
Malcolm Keller Beyer III