Belgium is the center of Europe so nothing is very far.
Paris = 1 hour by speed train.
London = 2 hours by Eurostar and Amsterdam is only 2,5 driving.
And when you fly for 2 hours you're in Milan or Madrid.
My favorite thing to do when I'm in an airport (except for reading gossip magazines and drinking Starbucks) is looking at the time and destination screen and make my personal top 3 where I would love to fly at that moment.