Hello kari2!
You are right, of course. However, for those of us who attended parochial grammar school more than sixty years ago, the RULES were pounded (sometimes almost literally) into our heads. Religion for us was very much like the religion of the young narrator of "First Confession" by Frank O'Connor. It is hard for many older people to shrug off that leaden cope of constant fear about breaking a RULE, and being cast into eternal fire. Please be aware, I am NOT describing the nitpickers who, for example,  delate an overworked priest for saying "all" instead of "many" in the words of consecration. I am describing the people who feel that THEY THEMSELVES must obey the rules, not the people who want everyone else to obey their INTERPRETATION of the "rules". I hope you can appreciate the difference. Have a wonderful day