Many people spend the entire budget on tiles and cabinets, then leave one single bulb hanging in the center of the kitchen. The result is shadows on the countertop where you actually cook.
Good kitchens need layers of lighting:
bright overhead light
under-cabinet task lights
possibly a light above the sink
Warm light looks cozy, but too yellow makes food preparation harder. White light shows dirt and helps with chopping safely. Lighting affects mood, safety, and cleaning — not just pictures.
Bad lighting makes even an expensive kitchen look dull. Good lighting can make a simple kitchen look premium.