It sounds like while your disability impacts your relationships, you are still physically capable of masturbating. There is a wide range of physical disabilities that can leave a person rather isolated outside of family, and incapable of physically “getting the job done”, while otherwise being healthy enough for sex/orgasms. So while you may have a great deal of trouble with forming relationships and meeting people, you are still able to experience the physical and mental relief of an orgasm. This is not attainable for everyone, and prostitutes can help in many of those situations.