The idea of "needing a religion" is honestly kind of foreign to me, so this is tough to answer!
My faith isn't a means to becoming the best sort of person by following these rules. It's that, I'm able to know my creator, who loves me, and that's really cool, and I want to know him and to be the person he created me to be!
It's like, if I said "I love music, it gives me passion and emotion and soul, which are things anyone can understand," and you asked, "well, then why do you need music?" I dunno, whether or not you need it seems sort of beside the point! It's just a good thing and I hope that everyone who interacts with me can see why it matters so much to me, and can see it shine out through me!
And to continue the analogy, if anyone finds music because of me, I hope it's because they saw how much I loved it and how much it transformed me, not because I wouldn't stop bugging them to listen to that band I like.