I've had my own website for a while now (
markfeenstra.com).
My website doubles as travel and writing blog, and although there is an element of being mindful of a future need for platform and visibility, the benefits I've realized at this stage are more community oriented. I've met some really interesting people through the blogging experience, and whether I'm just getting insider travel advice, or finding an email friend in somewhat similar writing circumstance, it's a valuable way to interact with people as A Writer, or A Traveler, or A Hockey Guy, or whatever (as I'm sure you already know).
A big part of hosting my own site and buying the domain name is wanting to control the ownership of my name when searched on The Google, and not wanting to operate within the constraints of a Blogger template.