text: Anybody is welcome to attend a Catholic Mass or an Orthodox Liturgy, the only request is that you don't partake in the Eucharist. (You can cross your arms for a blessing though). I've been to a few different Protestant services with my wife's family, and (personally) I find them to be....not as deep as a Catholic Mass. So that might be your issue. To all of your other issues, I can understand. The denominations being the biggest issue I think, but I understand what the root cause of it is; authority.