It is a common misconception that thicker mattresses are always better than thinner ones. This is not necessarily true. In fact, the thickness of a mattress is only one factor to consider when choosing the best option for you. The other important factors include firmness, support, and comfort.
With that said, 10 inches is considered to be a thick mattress. This thickness provides good support and can be comfortable for most people. However, there are some people who may find that a thicker mattress is too firm or does not provide enough support. If you have any concerns about whether a 10-inch mattress will be right for you, it is best to speak with a sleep specialist or your doctor before making your final decision.