Higher resolution means higher power consumption. If you follow laptop reviews, you'll see that getting a 4k panel will set you back at least an hour of battery consumption compared to standard 1080p, perhaps two or three depending on panel and battery size.

I like high-res screens. But in general, the best course of action for a laptop is to get the lowest possible resolution that still works for you. Personally, I have a hard time seeing how an upgrade from 1440p-ish to 4K-ish makes any discernable difference on a 14" and how it justifies cutting into my power efficiency.