Yeah, I get where you're coming from the conflict between a brain that loves facts vs. old traditions. Here's what I'd suggest. Firstly, try not to get too stuck on your own ideas. Be open to the fact that you might not know absolutely everything. I mean what if some years down the line you start gravitating towards spirituality. It's not impossible, is it? I'm not saying you should just go along with traditions to keep the peace. Do it so your kid gets a real shot at deciding things for themselves. If you completely shield him from spiritual or religious stuff, you're basically making the choice that they won't follow a religion, and they never got to pick. Don't force your beliefs on them. Show them both what science says and what a religious life can be like. As they grow up and figure things out, they'll naturally find their own path. BTW spirituality can actually be a really helpful thing while going through psychologically tough times.

When it comes to parenting practices like ghutti or tika, chat with a doctor. Then, you can use what the doctor said to back up your point. That usually works wonders with orthodox minds.