I don't know what's up with my fellow millennials in the comments. I do order food once or twice a week.

About the fees, there's none if you order directly from the restaurant, and the apps/services that apply them (usually just one) take it out above a certain threshold, or looking into your email spam for of their 'discount offers', but the prices of the food are higher anyway (which I find more dishonest than simply charging a delivery fee).

Also, I only tip if it's rainy or super-hot (the weather, not the food or the delivery person), because Europe.