I would weigh a few options:
(1) What is your final career goal? Your career may require a higher degree or more education experience.
(2) Would your career pay you more for a higher degree? Some positions pay a higher salary for someone with more education.
(3) How are you going to pay for more education? Depending on the school, you might be able to work and take classes simultaneously. You may have to take out student loans to help pay for school. Some employers will pay part or all of your tuition if you can provide a form of guarantee that you will work for him or her for a set amount of time.
(4) What do you want to do? It's really up to you. Some people are lifelong learners and take classes for their entire lives. Others take just enough. Everyone is different.