Are hi-fi systems worth it?

Are hi-fi systems really worth the investment? Many argue that they offer a superior audio experience, but with the advancements in technology, is it really necessary to shell out thousands of dollars for a high-end system? Can't we just use our smartphones or laptops to listen to music? Is the difference in sound quality really that significant, or is it all just marketing hype? Let's delve deeper and explore the pros and cons of investing in a hi-fi system.