Altar servers and priests kneel on the bare ground. Just saying.
It is funny to see the men give general answers and the women are speaking directly to AnthonyPadua, who they have personal opinions about and are trying to help him grow as a man.
He is probably not kneeling for prayers for hours a day.
First off, priests don’t kneel for most of mass. And servers kneel on carpeted steps. No one is in pain during mass.
If one is thinking about the pain in his knees, then he can’t concentrate on God, which is the whole point of prayer. Some people are pushing quasi-Jansenist stuff, where pain = holiness. That’s extreme and not catholic.
If fasting got one to heaven, then the Church would have us fast everyday. But She doesn’t. Because pain/suffering is not the point of religion. Love of God is.
And if the pain of kneeling doesn’t help you pray better, then it’s bad. For some, it might help them. Everyone is different. St Peter was different from St Paul. That’s the principle.
Self/inflicted pain for religious purposes is almost never advised. It can lead to a dangerous temptation of pride. And excessive self-focus. The best is to do penance that the Church says. And accept the trials that God sends into your life. Any other penance, which you put upon yourself, is a danger.