The decision to attend grad school really depends upon your goals. Is a graduate degree going to advance you in your chosen field such as a medical or law degree? If so, then the answer to the question is grad school worth it, could very well be yes.
If a graduate degree is a nice to have, or something you are hoping to help you get a raise in your current field, you might have to consider whether or not the additional cost of schooling, plus your time, will create a positive return on your investment. While it’s true that those with a graduate degree tend to earn more than those with only a bachelor’s degree, if you determine the costs are not worth the reward then grad school may not be worth it.