Then I cast Light, create food and water, and whatever clerics get as cantrips and don't have to file paperwork with the DM.
As a DM, this would be absolutely 100% fine with me. I'd love to see the wizard cast prestidigitation to have the food taste good too.
Why? Because as a DM, I don't derive challenges from the survival aspects of the game, at least not 5e D&D. In essence, exploration itself isn't meant to be a challenge, its meant to be an experience. You explore new locations, find new treasure, avoid dangerous traps, see exciting wonders, and discover interesting lore.
While I understand the idea that exploration should be a challenge like combat, that's not what the game means when it calls exploration a pillar of play on par with combat.
Many DM's (bad ones, IMX) bastardized exploration and throw it out because they don't actually put in work to make it fun or interesting or even meaningful. And if they did that to combat, the same would occur.
Imagine: Your mission is to dethrone an evil merfolk king. The first fight is an ogre. Okay, cool. The next fight is another ogre but bigger numbers. Uh huh. Third fight is an ogre that doesn't hit back. Uh? Finally, you enter the throne room of the evil merfolk king! He has the stats of an ogre...
Hey, wait a minute! That's boring!
Same thing when you explore a forest. And then another but the wolves are dire. And then another but the river is a DC 30 instead of 10 like last time.
yawn. Make sure to put effort into your areas so exploration isn't a slog fest.