You definitely are in the minority - of minus one. :)
Between diary and blog, a blog is the better option, because it has all the advantages of a diary, but also the potential upside of publicity (if you want it).
How much publicity have you received? Be careful what you wish for. It's crucial to note that publicity brings a number of potential downsides. For example, close to home, Hacker News commenters will totally trash you, whether you deserve it or not.
Plenty. More than you ever will, in multiple lives.
One final telling point, for everyone here, not just for you, because, over time, I've detected a good deal of wimpishness, and ironically, at the same time, entitled attitude, along with racism and other forms of prejudice, among some/many of the HN echo chamber crowd around here:
If you're scared of downsides, you don't deserve the upsides, and probably have not got, and will not get many of the latter, ever.
Between diary and blog, a blog is the better option, because it has all the advantages of a diary, but also the potential upside of publicity (if you want it).