This is my third year in DB and I have neither children nor pets. If you're looking for an active nightlife in DB, you're going to be disappointed. Most of the party crowd heads to Central at night. The ferry ride back has not bothered me in the past but I know people, who don't cope too well if the sea is a bit rough (especially after a bit too much to drink). The DB plaza attracts people of all ages but it's mostly to drink - no music, dancing etc. During the week, I rarely stay out late; however, on week-ends I don't really mind the fact that it takes an extra half our to go to Central or get back home. I enjoy DB for its relatively clean air, lack of traffic, the seaside dining options and the beach (although I tend to go to South Lantau if I want to go into the water). There are a lot of pros and cons regarding living in DB, it really depends on your personal preferences. Let me know if you have additional questions.