Back in the reforming era, the Popes had some bad experiences with a few protesting Catholics knocking the elevated host off its pedestal as it was beng pulled along in a cart (host descration). They generally got put to death. It's a dangerous thing being near an elevated host. Intentional host desecration is not only a
mortal sin but also incurs the penalty of
excommunication latae sententiae.
Check out a
15th-century German woodcut of the host desecration by the Jews of Passau, 1477. The hosts are stolen and sold to the Jewish community, who pierce them in a ritual. When guards come to question the Jews, they (the Jews) attempt to burn the Hosts, but are unsuccessful, as the Hosts transform into an infant carried by angels. The Jews, now proven guilty, are arrested, beheaded, and tortured with hot pincers, the entire community is driven out with their feet bound and held to the fire, and the Christian who sold the hosts to the Jews is punished.
Persecution is still going on.
Man sentences to 8 years in jail for descrating the host.
A priest slaps a young man across the face and drags him from the Church and loudly pronounces him a ‘blasphemer' for descecrating host.
So we see that the mass is really about doing homage to a piece of bread.
In any case the rules of the Free Prestbyterian Church of Scotland prohibit attendance at mass, and I don't want to fall out with them (not that I live in Scotland).