Not to me it isn't. I think you are trying to justify the fact that you paid far too much for a vacuum cleaner, like most people do when they buy overpriced item and point out the obvious problems with their products.
I own a Land Rover. It is old, expensive and unreliable. You know how I justify my spending on it? I like driving it.
I own a Land Rover. It is old, expensive and unreliable. You know how I justify my spending on it? I like driving it.