Because that would allow a majority of people to hit max level and get bored even faster. No new DLC in sight proves that even more. Hope they prove me wrong soon.
i cant speak for you but even at max light id still take a run at atheon or whatever else once or twice a week simply for the challenge and experience. and if there were rewards that matched our light...bonus! i agree with you though, this year looks pretty bleak from a content perspective. a festival and one medium sized update. i guess that's precisely why im asking this. i genuinely miss being excited about destiny =[