I'd rather not have foils because they're more delicate and I have to take more care to prevent them from curling.

When I used to play constructed formats, I'd sometimes entertain the thought of getting foils of only certain key cards as a signal to help me recognize them faster. I had a similar thing with my old Modern Tron deck, where my Tron lands were the only white-border cards, so they were really easy to pick out while searching my library. I never ended up doing that with foils, though.