Design Decisions Have Multiple Facets
Shower curtain hooks annoy me.
The design on the left, with two hooks, is great. One hook for the interior, plastic shower curtain, another for the exterior, cloth curtain. The hook is easy to get on or off the rod. However, metal rusts near water.
And, showers have water.
When metal shower rings rust the rust streaks down the cloth shower curtain, permanently discoloring it.
The design on the right kind of sucks. The curtain can’t be easily removed to clean it unless I leave it unfastened. If left unfastened, it falls off the ring. But plastic doesn’t rust.
Make a shower curtain hook in the style of the one on the left, but out of a material that doesn’t rust.