Well, I think you were wrong to 'take the lane'. It may be legal, but it is inconsiderate too.

It is just like the people around here who go 55 mph (the posted limit) in the left lane on the expressway, even though traffic is going at 75 mph all around them. The signs say "Slower Traffic Keep Right" whether slower is 55, 45, or 70, it just keeps traffic moving better.

You don't need to take a whole lane. Why would you do it and slow traffic down? Do you honestly believe you're safer this way? Some road rager may just take you out some day. It is better not to be dead right.