Trust
It amuses me that Almon Strowger invented his automatic telephone switch specifically because the telephone operator in his home town would connect calls intended for him to a competitor (both were undertakers) who just happened to be the operator's husband. His belief was that an incorruptible machine would be an improvement.
Fast forward to today, when your ISP is probably knobbling your DNS requests, possibly in addition to your OS vendor (and perhaps a few others, wearing hats of various shades of grey). Not to mention the various rank-fiddling by search engines, recommendation sites, and SEO. How's that "incorruptible machine" thing coming along?
Meanwhile, isn't "secure DNS" also subject to MITMing by a number of players, and dependent in any case on the certificate issuers also being incorruptible, not to mention invulnerable to malfeasors?
Biting the hand that feeds IT
