I feel that when you go outside of Scripture to claim things that are not supported by Scripture, you're getting into dangerous territory. Nowhere, and I mean nowhere in Scripture does it say we are supposed to pray to a dead ancestor.Personal experience.
Be assured Catholics do this faithfully--and first and foremost. We also gather as a community, as the Body of Christ, and worship/pray together. (When two or three are gathered...) There is nothing to criticize. If someone else doesn't do it this way, so what? Do you truly feel this is a "My way or the highway" issue?
Is St Peter greater than you and deserving of supplications for help? Where does Scripture say that?No kidding. Go to God along with us. Have you ever read some of Peter's biblical antics? He definitely needs a leader above him, but he is a great associate to all who also need that Leader. He gets our own "foot in mouth" moments!