I've raised two sons. During that process, many things have been taught to me. Most of which I am still learning. Is there a lifelong learner's club? There should be.
When my son got his tongue pierced, I thought about it (didn't speak until after thinking, that time). While pondering it, I grabbed my tongue between thumb and forefinger and squeezed. It hurt, but wasn't all that bad. So later I told my son what I had done and we had a laugh about my tongue pinching experiment. He said his piercing didn't hurt at all and I turned to the internet for research (which is kinda my thing). I saw something in the Bible where a servant could be joined to the house (family) by piercing through the ear and into the doorpost of the home. You'll know more about this than me, as I've not studied it.
But back when I grew up (1950's and 60's) there were other "issues" between generations. Mostly it was about hair length and music choice. Beatlemania, as seen through the Ed Sullivan lens, Jerry Lee and his "inflammatory" song about balls, pelvic gyrations, and "free love". Of course, there were other more serious issues for the young to trip over. Drugs, for instance. Over the years, and as the old dog learned, unless something is sin, there need be no rebuke. Sometimes even the best intention merely causes the "gap" to widen.
Many have tried to make a case from Scripture about various behaviors being sinful and I do understand that we are to avoid even the appearance of evil. That thought requires balance though. It's something that is learned over time and may only be understood by those who are mature in the Word, having exercised themselves in it. One one hand is the possibility that a brother or sister may be stumbled by the liberty that is taken and preference should be given for the weaker. On the other is the fact that it is God and God alone who judges hearts. He declares that some things are left up to individual conscience. So that if a brother believes it to be sin (I don't), then for him it is sin. As I've said, a balancing act that requires skill.
But farouk, I know you know these things. I also know that you are able to walk people who are curious about the whole subject or even the small parts within it through the discussion. I could go on and on (and have) but just wanted to say that I meant my greeting, "Blessings to you also, farouk" and I do think it is good to have a place to talk about stuff here.
I know that I've left things out while discussing it above, but I like what John said in the close of his Good News Gospel: John 21:25 especially the 2nd "should be written," as in, "And there are also many other things which Jesus did, the which, if they should be written every one, I suppose that even the world itself could not contain the books that should be written. Amen."