I second your question. I have no particular inclination to make myself a wiki page and so mine is blank too. I'd like it to be able to remove it entirely.

I in general find it a minor nuisance that I have an extra page load to do to reach the desired user page. I want to see the comments and posts not a profile. When I want to see interesting profile pages I'll go to OkCupid. (I wonder how long it would take to write a firebug script that took me to the appropriate page by default.)