Ok so I know we do more than haste but here's what I'm seeing more and more, granted I just reached lvl 9 recently but...
We get into the dungeon, I cast haste and away we go. The melee kill everything so quick it verges on pointless for me to cast anything save a Fireball here and there or a MM or Scorching Ray. Depending on the group even Firewall can seem a waste. There are exceptions of course but **** it seems most of the time I just feel like a hasting XP sponge. I absolutely love glitterdust but the mobs are dead well before it lands.
Maybe I'm just in good groups, maybe I just suck as a Wiz, I dunno but I love the Wiz and his utility, I just wish I felt more useful than haste or please load knock since we don't have a rogue.
Before asked this is on Normal, Hard and Elite. Elite I feel a tad more useful but it still gets zergy. I try to veer away from zergs because I'm most definitely only used for haste then.
Just curious on others thoughts