Because it will get boring... That it's, easy answer. Do you ever think why you stopped [i](for example)[/i] playing FarCry 4? Or Hardline? Because they never evolved [b]"Frozen in Time[/b]. How many times can you win with the same gun without it becoming repetitive? This is nothing but a good move for Destiny, most games get stale quickly because you find the most OP load-out and yes you wreck shit and complete the game then what? It's done, no new toys and eventually you end up never going back to said game.