Part of the reason that IE6/7 was so annoying is that those browsers had a large market share but also lacked the features of the other leading browsers so you

Part of the reason that IE6/7 was so annoying is that those browsers had a large market share but also lacked the features of the other leading browsers so you always had to bend over backwards to make your code support both. Chrome does not have that problem. I fully appreciate the monopoly/privacy concerns, but Chrome being the market leading browser is 100x better from a development perspective then when you had to worry about IE6.