The duality of physics students everywhere! That moment when you first grasp Gauss's Law and realize you can calculate electric fields without those nasty vector calculus integrals? Pure joy! Just enclose your charge in a symmetric surface, and poof - the math simplifies beautifully.
But then reality hits harder than a particle accelerator: try applying it to anything that's not a perfect sphere, infinite cylinder, or flat plane, and suddenly you're back to complicated integrals. The universe giveth elegant mathematical shortcuts, and the universe taketh away when your professor assigns problems with weird-shaped charge distributions.