I have seen it. Even in the church. It was a problem in Jesus' day too. The scribal legalists of the day said this was legitimate. Jesus said this was nuts.
Physical support is a part of honor.
No question, problems arise. One more mouth to feed can be a financial burden. Sometimes aging parents need help in caring for themselves. In Grimm's Fairy Tales there is the story of a man who had taken his elderly father into his home. It distressed the son to have to do it and disturbed him that Dad was not as physically capable as he thought the father ought to be.