WELCOME to MLM.com! It's very good to see you here! I didn't realize you had a few posts on this Forum.
I have been a member here (off and on) for many years, but I don't visit as much as I should. In fact, this used to be the TOP Forum for Network Marketers, but in the last few years, it has not been nearly so active (thanks to Facebook / Twitter, etc).
YOUR QUESTION - I would say that, although it is not a necessity (to have a Personal Website / Blog) - it certainly can have advantages (and "your" Site / Blog is one of the best I've seen, by the way! :>)
SITE / BLOG - I do have a Personal Website / Blog too (VirtualWealthPlan[dot]com) but I had it built for me (by a wonderful guy, in Nigeria) - because I am not a technical person - nor do I know SEO, etc.. And because I found Wordpress difficult (for me), I went with WIX[dot]com for mine (SO simple to use).
REASONS FOR - First, a Personal Site / Blog can be a great prospecting tool for "leads" - via ATTRACTION MARKETING - because it enables us to put out VALUE to others (hopefully, helpful "content") - up front (thus, building the trust factor somewhat).
Second, because a Blog is an "interactive" format - it enables us to "get to know" those who comment on our articles, etc - a nice bonus.
Third, I believe a Personal Site / Blog can help us showcase our own USP (Unique Selling Proposition) somewhat, as well as our strong passions about (what we believe to be) important issues - and thus, we may gain some credibility with viewers - and eventually, "earn the right" to their business.
Anyway - these are just a couple of my own thoughts on this - I'm sure other members could add to this.
Again - very good to see you here Chuck.
Sincerely / Peter A. / Canada