Try being one of those Moms or Pops who have been run out of business by Wal-Mart at age 50 or 60. My father-in-law was one of those. He had to close his small sporting goods store and is still in litigation with Nike over less than $20,000 in unsold inventory. It ruined his life and took what little savings he had. Now he has to work as a greeter at Wal-Mart because he needs a job to supplement his meager Social Security and small 401(k), and there is nobody in his small town that has a job for a senior citizen. He has years of valuable retail experience, but his Wal-Mart store manager is 32 years old and won't listen to any of his suggestions. His eldest son also had to give up on his plans to take over his dad's store and ended up in an unsatisfying career selling cars. His daughter worked in the store as a young teen and made all the signs, which led her into a successful career as a graphic artist. She would not have done this working as a cashier at Wal-Mart or McDonald's.
Many of these Mom and Pop stores used to employ Sons and Daughters, giving them valuable sales, inventory, graphics, and customer service experience. Are they going to learn these skills as cashiers or grocery baggers?