Fashion trends tell us what's in style in every season otherwise we could be rudely stared at or whispered about in public, or worse, we can be cited as examples of what a fashion faux pas or fashion mistake is. While to some extent we are compelled to follow the norms in fashion, it doesn't necessarily follow that we lose our own sense of style in the process. It gives you some sort of security and peace of mind even knowing that what you are wearing is within the agreeable style of fashion for a particular season.
Fashion trends take a lot of factors into consideration such as the weather, season, comfort, and lifestyle. And this is a very difficult work for designer such as Polo Ralph Lauren to think for a new trend that will click whatever season it is. If you go with the latest trends just use your imagination or creativity to make it your own style.
Fashion trends are there to help people decide which one suits them best and which ones they can go without.