Patterns are really just a way of describing how things work. It is a way of classifying them. Are there some programs that overuse them? Sure. The biggest advantage of having patterns is that by classifying something as this or that, everyone is on the same page (assuming they have the level of knowledge to know what is being talked about.). When you have a system with 10,000 of lines of code, it becomes necessary to be able to quickly determine how something is going to work.
Does this mean that you should always use patterns, no. That will lead to problems to force things into a classification, but you shouldn't shy away from them either.
