No, I attend a Catholic church. So as far as I can tell, just I do it.
In Mass, I participate with the liturgy and prayers of the Mass but when I am not at Mass I pray and worship any way I want and use any words I want.
Same here.
Some people are just absurd in their prejudices.
Okay, I'll bite, how am I being "prejudiced" rather than simply disagreeing with Catholics?
As you have things decided for you about how you will worship and the words you use.