I'm Canadian and met my British wife here 15 years ago. Raising 3 kids and we have no other family here.
I have traveled the world extensively believe Hong Kong to be one of the best cities in the world to work, play and bring up a family. YMMV
Re- Sharing food: I have to admit i way prefer sharing food than having my own plate - unless I eat western food - (and from where I am from this is rather unusual since we pride ourselves on having some of the very best "new cuisine" - which you do not share, mon dieu!)
Other than a steak, we share all our food too. Never get the "Oh I wish I'd ordered that instead" feeling!
There are literally 1000s of music venues in London the sae in NY. Only the REALLY big acts would play at either the 02 or Wembley, which admittedly are also a massive pain in the a** to get to. nUT You'd find a plethora of pretty large venue across the city..Brixton, Hammersmith, Alexadra Palais, shepherds Bush to name just a few.
That being said, he has a point, since I think having a local partner (and speaking cantonese) makes you appreicate HK more because that local partner (and your language ability) can open up things to you, that a purely foreign couple, often (not always) can't access.
It's exciting because when you go outside at 1am there is always a crowd and a buzz in HK. Whereas in other western cities it's quiet. In HK people also walk more, there is more interaction, hence the buzz. People here do not stay home as much since home is a little cubicle so again more interaction. In most western cities the car dominates as spaces are so spread out and backyard bbqs are very popular. In HK I can get anything customised (clothes, furniture, etc.) forget about that in the west. I can also get any kinds of electronics here first - outside of NY and Tokyo, HK is ahead. What I wished HK had more of though - stadium sports events (just the one Rugby event - and I really don't like rugby) and popular musicals and artists (though Macau is getting these). I also find HKers more cosmopolitan than most American cities but not as much as European cities- majority of Americans do not even own a passport and have not travelled outside of the US, whereas many HKers travel internationally, albeit in tour groups.