I’ve set a number of my pins to 5 balls as well; and the main reason is that my wife and youngest son find them far more enjoyable as well as less frustrating.
They like to see some of the more difficult to reach modes or levels. This is particularly the case on my newer Sterns where I have them set up a bit steeper and playing very fast.
For myself and older son, it’s not ideal and from time to time, we move them back to 3 ball and closer to factory settings.
For my friends who are more avid players, the pins are always re-set back to 3-ball factory levels.
The most important objective in our house is for everyone to have a blast.
If we were competitive players or participated in a league, all pins would be set up 3 ball for certain.