To be honest, that's basically how end game in all MMO feels.
Lord knows I got bored of running around Timeless Isle in WoW after 3 weeks straight. I mean, the dailies changed up each day, but it was still just a cycle of the same 20 quests throughout the week.
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The trouble is WoW gives you reasons to keep playing and you can choose what that is. PVP or PvE, creating things to sell or trying to buy something amazing. Destiny is very hollow and without a story I don't think anyone will stay around for too long.