...many times in ridiculous ways.  Most "conservative" congregations shake hands, while in others people make a real show of hugging, kissing and glad-handing while their presbyter/presider makes a big show of abandoning the altar to roam up and down the aisles to shake as many hands as possible.
Early Christians certainly treated the Mass and Christ with much more respect than one finds in the NOM.  Also, the Mass and the Agape were different things entirely.  The agape was actually discontinued because it wasn't necessary and caused too many abuses.
The Council of Trent covered, dogmatically, what is required for valid sacraments; matter, form, and intent, and was very specific regarding each of the 7 sacraments.  Invalid matter has been a problem for too many NOM parishes for decades.  (Consecrating Diet-Rite Cola and hamburger buns during the middle of a three-ring circus is but one example of an invalidating abuse that never would have happened in the Roman Rite before the NOM...