At times, our fear of displeasing our parents results in our actions that might be pleasing to our parents, but are displeasing to Allah. Sometimes, our parents just don't know any better, as to what Allah swt wants or has commanded. We owe it to ourselves to find out what Allah swt wants , and then we need to make sure that pleasure of Allah comes before the pleasure of our parents (if our parents don't know any better).
We need to follow the islam of Allah, not the version of islam of our parents (if it's twisted and strayed from the real islam). Because if we do the latter, we'll be no different than the arabs who didn't accept islam and claimed they'll stick to the religion of their forefathers.
Granted there will be emotional blackmail by parents that our actions will result in the anger of our parents, but it is at that time, when we need to ensure that what Allah swt is asking for and what our parents want are one and the same thing. IF it is not, then Allah's pleasure takes precedence. Otherwise, what will result is our own twisted version of islam that we see sadly see prevalent in Pakistan....
