How do you deal with super superstitious parents/grandparents? Sometimes, I feel like I'm not a good parent for them just because I don't follow what's accustomed.

Superstitions are deeply rooted from our history but I think that it's there because it's the simplest solution/answer to our unknown questions. I just smile and nod whenever I'm advised with something related to pamahiins. At the end of the day, I know what will be best for my child and I'm raise her how I want her to be raised. I don't think you're a bad parent just because you don't believe in superstitions.