During a remodel of a master bathroom a few years ago my plumber shook his head when he saw the vanity that I had picked out. It had a shelf that was about 1 inch below where the pipe went into the wall. He said it would give us problems, but he would do what he could. So he made a p-trap and put it a little higher than the pipe going into the wall. I do not notice odors, and the sink drains OK but it is maybe a bit more dirty than my other sinks. My husband thinks it isnt a problem, he is more concerned with the drain in our other bathroom sink that has a funny downpipe with ridges on it. I think it ended up that way because it was an Ikea sink and the pipe sizes were different than what we had installed for the other sink that was in there. Hopefully I have attached the pictures correctly so you can see what I am talking about. I want to cut the shelf and put in a proper p-trap. Am I crazy?