Well, I know a friend of my husband who decided he had not had a seizure in many years and just stopped his medication. He ended up having a major seizure, with a trip to the hospital by ambulance, a few days in the hospital and needing to start back on the medication.
If you really feel like you would like to stop, check with your doctor. Many medications need to be weaned away VERY slowly to see if any problems occur or to prevent any problems from occurring. The doctor can also help with figuring out whether there is any other medication that could possibly be substituted for the ones you are taking. Sometimes there is a different medication that would be more acceptable to the patient or have less chance of side effects.