FYI, a typical page in a paperback novel contains 300-400 words: the preceding paragraph/sentence is 61 words long (per wc(1)).
So starting with a bang is mandatory, if you want to get paid to write for a living.
Welcome to the short attention span society!
Maybe that explains two of my favourite opening lines that both include things blowing up:
"It was the day my grandmother exploded"
and
"The moon blew up without warning and for no apparent reason."
What's weird about this is how I find Jane Austen's intros catch my attention, although they often have only tangential relation to the actual characters or plot of the book. The first chapter of Persuasion is about a vain, foolish, impoverished baronet whose primary comfort when he's down is to see his own name written in the massive tome of nobility. The main character is barely mentioned until the end of the chapter. But for some reason, I've always found it strangely engaging. Why do I care about this guy? But for some reason, I do -- at least, I'm hooked long enough to get to the actually interesting characters.
Starts kinda OK but pretentiousness creeps in towards the end.
Compare that to the best SF book I know to date, Pandem:
> On the twenty-ninth of February, on the strangest of the days marked on the calendar, David Hammer, an employee of a respected city newspaper, was returning home a little later than usual.
> It was a humid, almost spring evening. At Charing Cross Station, David boarded a train that was due to drop him off in East Croydon in half an hour. There was no one in the compartment for eight at that hour, except David and a guy of about eighteen, who, having fallen on the seat, immediately closed his eyes and gave himself to the power of music flowing from the flat box of the player into the black clips of headphones.
Unfortunately I don't think it was ever translated to English :)