Its come a long way. The product has evolved into a beautiful and powerful user experience that now rivals and in many cases surpasses iOS. Backed by Google's integrated cloud services, which are also maturing rapidly, you start to have a complete ecosystem that delivers to user expectations. Keep up the momentum.
I never bought the G1, but I used to go to the tmobile kiosk back in the day and look at it from behind the glass wondering what the hell all the hubaloo was. Now look at Android all fancy and stuff.
HAPPY BIRTHDAY! I have been a faithful android user for about 3 of those years. Anybody I've talked that have utilized both would very much prefer Android. Apple to Droid - stays with Droid. Droid to Apple - Come back to Droid.