My last 4 vehicles was a Ranger (5 years), another Ranger (5 years), A Lincoln LS (6 years) and a Fusion (7 years). Neither of the Rangers ever went back to the dealer. Neither did the Fusion although I did replace one door handle myself ($60). The LS only made 2 trips for various minor things.
My wife's last 3 vehicles were an Expedition (6 years), an Aviator (4 years) and an Edge (5 years). The Expedition had one repair (coil pack). The Aviator had several issues including a new engine head. The Edge hasn't had a single issue.
So yes - I do believe you're in the minority if you've had that many vehicles with more than 4 visits during the ESP period. And just think if every vehicle was like yours - Ford would be losing money hand over fist on ESPs and they'd either raise the price or stop selling them.