tower or laptop?

I work with computers since 25 years and about 22 years I would always have answered a tower . but now I realized a few things:
yes you can build in ings in a tower - but why should I - my recent laptop has everything I need and was as exepnsive as a similar tower together with a monitor (I have a packarbell with 17.6' display (1600:900 pixel, crystal clear, 320gb hard disc, 6gb RAM, 1024 mb graphic card, card reader, dvd burner, all conceivable interfaces andandand) wso what should i build in...
i love to take it with on longer jurneys to immediately start to work with my pictures and to store them immediately on a hard disc
i can take it to friends to show pictures
so i realy see no disadvantages anymore but lots of advantages (btw - i would nit go for a Macbook, but thats another story )