The Book of Acts Reprised?

I taught missions in Bible college and seminary for 40 years. As you can imagine, I taught the book of Acts many times. Every time I did, a student would ask, “Why don’t we see the events of Acts in our churches today?” I always answered the same way, “We don’t pray the way they prayed, and we’re not filled with the Spirit as they were.” (“They” referring to the believers in Jerusalem.) Why did I answer in that way?