I do not think that I would monetizing my blog in the near future. I consider this blog as my hobby. Turning it into a business could stress me out when you have to be responsive to sponsors and clients advertisement request. Who would love to be controlled, but not fully controlling the personal blog!
Personally, I do not appreciate the ads column. They turn the page layout less visually-pleasant. In addition, everyone is using adsblock now. The effectiveness of the advertisement is questionable.
Even if I want to monetize my blog. I would prefer writing sponsored posts for the company and therefore would not have unpleasant advertisement column on my blog. I would also make sure my readers know that this is a sponsored post. I won’t eliminate the possibility and opportunity of monetizing my blog.