Tell me now, without a frown. What grows up while growing down?

Even though we sing that its days are over, Every one has its day. Maybe that’s why they’re so beloved A bestie always up for a nap, drive, or play.

Part of the seven sins of man, sadly, I’m the one we glorify the most; If a squirrel stores nuts for winter, it’s the norm, but if it took them all, we’d ask questions; Why not apply this to man, this trait keeps them with the upper hand;

Tell me now, and don't be late. What kind of bird can lift the most weight?

I dance with the wind but have no feet, Held by a string, I rise with ease. Cut me loose and I drift away. What am I?