As someone who has been going to baseball games for 40 years, the first rule is YOU GIVE THE BALL TO THE KID. I have had season tickets for nearly 20 of those years and I look for the kids around me for the rare case I get a ball.
As an adult, if I want a baseball, I can buy a damn baseball.
Absolutely! About 15 years or so ago my son (who was a young teen at the time) was standing along the RF wall during batting practice and scrambling with folks for the foul balls hit there. He came up with one at one point and he promptly gave it to a 4-5 year old kid that was next to him. My wife and I were watching from our seats, I turned to her and said “We're doing alright with that boy!”