abirdcall
(she/her)
Mage Armor
That +3 Armor looks nice, till then you realize it's not. It's the auto pick of many Wizards out there, but let me tell you why it's wrong.
You're right about this. It takes an average of 6 attacks for the Mage Armour to do anything. There is less flexibility because you might be okay with taking a hit as well in order to have a different spell cast.
The major difference between Mage Armour and Shield is that you get to look at the attack roll before deciding to cast the spell.
Mage Armour though, does start to look nicer after level 5 when you are better able to afford casting both Mage Armour and Shield.
you are a dumb wizard:
You know you are out there getting hit by swords. For some reason you don't know how to stand back on most fights. You are that guy the cleric is always wasting spells on. Unless you are a PC party of two, the only time you should see a sword is when it hits your SHIELD spell when that NPC lunatic charges behind the line of your sword toting brothers. Or you could have been invisible or levitating--na instead you limited your choices when memorizing a +3 AC one off.
I entirely disagree with this. It's very hard to prevent enemy creatures from running up and attacking characters (or using ranged attacks).
Death spirals are a thing in 5e and characters like a wizard are the party's weakest link.
The wizard is the best target for most enemy creatures and there are few abilities available to party members to help protect them.