I started on June 9, and I currently have just over 200 hours of gameplay.
Though I think I've spent more time talking about the game on these forums than I have playing the game itself...
I've been playing since June 15, and have racked up 156 hours and 47 minutes. That still seems to be less than most in this thread, but averaging that number out still puts me at almost 2 hours per day.
Even if you are in ACNL main menu, it will be counted as 'played' in your activity log.
Mine is:
Play Time 661:37
Times Played 247
Average Play Time 2:40
First Played 6/20/2013
I have 4 characters to play, but my mayor character alone has 500+ hours of playtime (including afk) since i already got the gold badge. Also, i reset my town 3 times before my current town FYI.
I've played AC:NL for 310:48 hrs. I play on it for around 54mins each time, and I've played it 343 times since June 18th. N-No, I-I-I don't have a problem. I-I'm FINE