I have never regreted buying a flat here in Punggol. My wife and I have moved in here for about 1.5 years. I believe, without much doubt, that most of us like the peace and greenery here (not found anywhere else in HDB estates in Singapore). Yes, though it is still quite bare and without many amenities, I am sure the government will carry out their 'promise' to us to build this place into a Marina. Give them time maybe at least for the next 5 years.
If you notice, I find that Punggolians here are more polite. E.g. for those who take the MRT, you will notice that a majority of us will keep the right side of the escalator free for those who want to overtake. You will never see this in places like Orchard Road.