Depending on your end goal, I completely disagree.

If you are putting up a company blog, sure no ads is fine. But if your ultimate plan is to have ads on the site, add them early. You don't want to spring them on people once you gain traction. There will be backlash.

Your premise behind no-ads seems to be that somehow people are more willing to share or visit a site with no ads. I don't think that's the case at all (within reason).

Also, selling your own ads tends to be a waste of time at small scale, unless you have very specialized and lucrative market.