No definitive answer exists for this question since everyone's priorities and preferences are different. However, many people believe that down comforters are worth the investment because they last longer and provide superior insulation compared to cheaper alternatives like synthetic fiber comforters. Additionally, down is a natural material that is breathable and hypoallergenic, making it a good choice for people with allergies or sensitivities. Ultimately, the decision of whether or not to purchase an expensive down comforter depends on the individual's needs and budget.