Only because the DM started us at level 5 so we could do some fun things before the group inevitably falls apart.

It sounds cool, but remember, you could learn True Polymorph and make a clay golem every day. Or learn True Resurrection and bring back a legendary hero (or big bad, if you prefer). Or Gate and summon your opponent into a room full of Glyphs of Warding just because you know their name. Or Wish and make a new Clone or Simulacrum or bind a demon for 100 days or whatever other crazy exploits you can find. Is being able to deal a bunch of damage from a mile away once a day really worth it?