I think this quote nails it right on the head. If a choice is obviously superior to all other choices, that's bad design in a nutshell. The fact that you would be shocked that someone wouldn't prep this spell speaks volumes towards the brokenness of the spell, not the creativity of the player.
Yup, 100% can the wizard bypass that trap better than a rogue. 1st level Summon Monster spell. Done. Never mind unseen servant or even Mage Hand.
Are you seriously going to try to say that a wizard can't out rogue the rogue?
A single 1st level spell - unseen servant - can bypass pretty much every trap out there simply by triggering it at range. Combined with a wand of knock and what do I need a rogue for anyway?
No, a wizard could never out rogue the rogue. For several reasons:
1. Unless a trap is obvious/out in the open, how is a wizard going to know it is even there in the first place? Only Rogues can find traps higher than DC 20 (in other words, find traps period).
2. Traps come in all sorts of shapes and forms. Are you telling me that an Unseen Servant or Summon Monster spell can deal with all of them?
Many traps are pressure sensitive, and are only activated by a certain weight. Unseen servants don't weigh anything, and they can only exert a small amount of pressure.
3. Even if the spells mentioned could trigger a trap and disable it, is a wizard really going to waste precious spells on something a thief could handle? Most wizards wouldn't. I know that when I play a wizard, or even a sorcerer, I'm not going to blow through my spells on trivial things like that.
Yes, a wizard can handle a few situations dealing with traps, but in doing so he wastes resources better spent on something else. A rogue can do his thing all day. A wizard, should he try to do the rogues job, will quickly find himself out of spells, plinking away with a light crossbow.