I shall now take my turn to pontificate upon our topic.
Why do we not see the healings as of old?
First, many times the healings that we hear about occurred over the course of many years. When compressed into storytelling or book format, these can seem to have happened all at once.
Second, healings and miracles require a need to be met. As few people have any desire or capacity to handle pain or deprivation, they never have their faith in God's provision established. You may ask to see the sick and dead raised, but are you willing to be the one to fall to illness or death?
Third, we live in a prosperous country where all of our physical needs are met. We have food stamps, Medicare, Medicade, Social Security, health/dental/life/automotive insurance. We can take care of our own needs. The Laodicean attitude is ours, "We are rich and increased with goods and have need of nothing." This attitude will dampen the atmosphere for the miraculous.
Fourth, few people wish to spend the time in prayer, fasting, and the reading of the Word of God that it takes to see these things happen in the life of the believer.