The sense of entitlement many youngsters have these days. Get out and earn the bloody things you want and pay for them yourselves.
Parking where they want at school run time because "they are too busy to walk the kids to school" or whatever this weeks excuse if for being badly organised.
Letting the kids run around shops, restaurants, coffee shops etc. Somehow it's the shops fault when the kid gets hurt.
Sitting in a restaurant with 4 yummy mummies on their phones and the kids on their phones/tablets. Often this is related to the above point about letting them run around because they don't want to do any actual parenting.
Using parent and child spaces but leaving the kids in the car.
Generally the selfishness of modern parents.