I believe a large majority of reddit users are lurkers. I browsed the site almost daily for months before I felt the need to create an account so I could start commenting.
Same experience here. I steadfastly avoided Reddit for a while (no real reason, just didn't want to be assed with a new community, then caved and only followed two subreddits for updates on games I was playing.
Eventually the lurking converted me to a registered, commenting user, then finally a submitter as well.
Eventually the lurking converted me to a registered, commenting user, then finally a submitter as well.