Pre the DLC, I would make sure I did the daily in an attempt to get Ascendent Material to level up my armor and weapons. Post DLC there's really no point to do the daily missions especially if your weapons are already maxed out and you have the new Raid Armor. I haven't done a daily in a while and the only time I do is when one of my friends is doing it, but I just usually join for the conversation
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Eh, some days I'll run the daily, some days I won't. If I'm leveling up armor or weaponry I'll just run it at 26 cuz I'm lazy. The rewards aren't enough to do them consistently, no need for more ascendants and legendary engrams that rarely drop usually turn into ascendants for me anyway.