i used to ride to where i was studying of a night time..
its yeh... its alright for a while.. like its a good novelty lol. depends how far you have to ride... id make sure your fully dekked out (appropriate riding gear, lights on your bike etc) and you'll need a massive bag to carry everything lol. i used to ride 15 kms there, and 15 kms back! was a reli money saver but not much fun u know what i mean! And to be honest, its pretty embaressing (at least it was for me!) But yeh if your gonna do it then good n you!