Well the best way is to address their fears. As parents their concern is legitimate just as your right of choice to marry or not is fully legitimate. The middle ground is to address their worry logically, to show a few examples especially since these days the idea of a commune living is gaining prominence. Tell them about the systems such as health care etc that take care of many things that needed suppoirt of a partner. Also let them stay with you for a while so that they can know first hand how you are managing. Finally instead of blocking the idea completely you may tell them that you are open to long term friend or partner or even marry if you find someone with whom you feel happy and comfortable.
Affectionately,
Alok Da
