People play different card games, different board games, different video games, etc. So, when it comes to chess, why would people limit themselves to one particular game of its type ?

Chess variants offer you some more variety in abstract strategy board games without losing the main qualities that distinguish chess from these games. These include such qualities as a diversity of pieces, the object of targeting a single piece and an abstract simulation of warfare. With chess variants you can try out different pieces than are found in standard chess, boards of different sizes, shapes or geometries as well as different rules.

😎 Video - 9 easy ways to make chess fun (13:58) 
         *an entertaining presentation

👍 Play v computer  @ lichess.org