So when I say my 20 decade rosary, I need to be kneeling the whole time instead of sitting, or I’m disrespecting God? Bit much, don’t you think? I was not trained in a convent and while I probably could kneel for the whole thing or maybe 1/2 of it, since i don’t have broken knees or anything, the physical discomfort of the position would eventually distract me from the prayer I was trying to make. I’d really rather get into a comfortable position and focus on the prayer, the “talking to God”, itself.
Or how about when someone might be saying a quick prayer as they go about their chores for the day? Nothing is stopping you from setting your work aside and kneeling, but do you really need to be doing that every time? The Enchiridion states that “A partial indulgence is granted to the faithful who, in the performance of their duties and in bearing the trials of life, raise their mind with humble confidence to God, adding-even if only mentally – some pious invocation.” This is basically a prayer. I don’t think we are expected to stop performing our duties and drop to our knees each time we “raise our mind”.