I’ve tried that already. Most of time, parents are not able to change, even if you explain everything precisely to them. This is assuming they will listen in the first place. Parents have already done their best the first time around. They are now in their 60s, 70s, 80s, 90s. People in that age range are set in their ways. The best, and least frustrating approach, is to meet them where they are and accept them. I’m speaking from my experience. You are welcome to your opinion. Also, if something really terrible happened in the past, like assault, murder, rape, or incest, then I can see how some people may not be able to forgive.