What's for me the magic of travelling [someone here to correct my English, please! :P]

I live in a small town, and I've always liked it. It's safe, you can go anywhere without anything happening to you... and I used to like it.
"I used to like it" because I realised that depending on the knowledge you have of the world, the idea of "beauty" changes radically.
Some months ago, I travelled abroad and each time I stepped into a different city, I found myself amazed with all the new things I could see, the different cultures I could be into experience/become immersed in/participate in ("be into" seems a bit odd here), all the people I could meet... and when I came back home, I felt that everything was the same, like I'd never left. The streets with the same shops seemed to had been freezed have been frozen until I came back, my bedroom was waiting for me in the same conditons I had left it... no radical change at in sight.
I love my city though, after all, it's home, besides I think that even if I lived in the prettiest city ever, eventually I would find it a little bit dull, because everything instead of being special would be an everyday thing.
It was a strange feeling, like the trip itself had been a dream... and that's when I discovered the magic of travelling.