ThirdWizard
First Post
I think once you've reached the point where you can spare a first level spell slot, it would be foolish not to use it for Mage Armor. Unless there's a better option.
Which I'm hard pressed to come up with.
It's not really about the 1st level spell slot, its about the prepared slots that it will take. Even a 15th level wizard with 20 Int can only prepare 20 spells for the day. It seems like a lot, but that's all his spell levels combined up to 8th level. That's only two spells per level. You have to give up something for that prepared slot on mage armor, for one cast per day. As you go up in levels, acquiring more spells, and having to make harder decisions, it actually becomes more difficult to spare one for mage armor, even if it is a pretty good spell. Then, if you're talking about sorcerers and spells known, it gets even worse.