Excuse me, but why dissuade anyone?!
You know, at one time there was a wonderful, highly cultured participant here. Well, I once liked her wise answer: "I don't have to prove to anyone that I'm not a camel."
Your relatives ≠ You.
("And you look like your grandmother. But you're not her!" - there was once such a children's poem in the magazine "Murzilka").
So let them [religious believers] think what they want. You are not obliged to follow their lead, you are not obliged to embrace religion following your dad, grandfather, son-in-law, godfather, godfather, neighbor, director, president...