This is very true, and this may be the reason people have a problem with Christianity in this day and age, but other factors go into it.
I have never bought into it, and as Pastor Bob used to call it, "Blab it and grab it," it basically comes down to that."
Do I believe Jesus can heal? Most certainly. Although, I have not all the capacity for my eyesight, Jesus has made me see different things that the eyes cannot see. If one comes to Him, he or she needs to see with their heart.