Man, sometimes I wonder what would've happened if The Division came out before Destiny. Played the D2 beta, enjoying it immensely, loved watching people do raids in D1 and look forward to doing it myself.
Still think I like the setup of The Division more overall (me, I do, I'm not stating this as objective fact, ya bloodhounds).This is of course just a small slice of D2, but I enjoyed walking around and marveling at The Division's city, getting to know it, doing different missions there, finding all sorts of cleverly hidden areas -- without several team members breathing down my neck that I need to get moving, without always having to shoot dudes. You could dive in and out of combat if you wanted to mess around for a while, very noncommittal. Then there was Last stand, the dank zone, incursions, underground. Good times.
It must be the Dark Souls effect. You like the one you played first best.