For What It's Worth

My message and my preaching were not with wise and persuasive words, but with a demonstration of the Spirit’s power, so that your faith might not rest on human wisdom, but on God’s power.
1 Corinthians 2:4-5

How does the modern church operate?  By spending an hour each week having someone give a carefully constructed message.  I've never been a pastor, so I don't have personal knowledge of how sermons are generally prepared, but why do we "modern" christians not see apostle-style demonstrations of the Spirit’s power?  Where are the miraculous healings?  Where is the divinely-given ability to speak in other languages (not supposed "heavenly" tongues, but Acts 2 style)?  Where are the people being raised from the dead?  Why are the "miracles" we see today so limited?  I believe that I am alive today because of God miraculously touching me in 2006, likely in response to the fervent prayers of many concerned believers, but when did a Biblical miracle go only halfway like that?  Are we depending too much on human wisdom?  What does my faith lie on?  What about yours?