100 Gigs
I started up my mp3 collection in early 1998. I quickly gathered my favorite artists and suddenly I passed 1 GB of music. The quantity continued to grow and I ended up purchasing new hard drives and being an early adopter for cd burners (2x burners that took just under an hour to burn a single cd...and about half of them would fail).
Anyway, if you fast forward we get to Thursday, October 6th, 2005. On that fateful day my collection passed the 100 GB mark. Why? I don't really know. I can say that my music purchasing rate has either stayed the same or gone up. I have been exposed to so many types of music that I have a large spectrum of musical tastes and I support the bands I enjoy by paying for their cds and sometimes going to their shows.