Mark, I think good question is to why and how did you come to support Juve?
In my case, I watched Robby Baggio skinning 5 Czech-Slovakian defenders if they werent there and finishing off what is definitely the best goal after Diego Maradona's beauty against England. And I also heard by the new is how a player moving from a team to team can stir up havoc in a city of Firenze.

int:
Baggio IMO, was truly the most deadly attacking force (Apart from Ronaldo and Maradona in his prime) that I have ever seen. If somebody compute attacking efficiency in terms of statistics than I have no doubt he would walk over Del Piero and Zizou, Vialli, et al. Zola would come close but even he would be quite far off. Then what you realise is how much you are attached to the team as you are to the player, and when I saw Del Piero against Genoa, & Parma - you realise you are witnessing somebody special growing up in your beloved colors and start loving the guy as much as your original hero. Oh magical games such as Parma, Lazio, Fiorentina, Napoli, all helped, as well as winning UEFA Cups (Those meant quite a lot those days).