Same with DAoC. I have so many vivid memories from playing that in my adolescence. It was extemely influential, and the way it made me feel was unmatched. The various town jingles still pop into my head regularly. Especially Cotswold and some of the little Hibernian villages.
I miss sitting out in Salisbury plains during the night cycle with a group of random people, casually chatting and listening to the chattering of insects. Game had great ambience.