Several months ago, my priest Fr. Vince Rogers had altar rails installed in our church and I love them. I actually would have been surprised if I hadn't liked them. He has had kneelers at the front of the church for years so that people would be more comfortable kneeling to accept the Eucharist so I had been kneeling for awhile---even when I was at other churches.
The altar rails not only allow you to kneel but they encourage people to kneel. They let people know that it is okay to take the Eucharist on the tongue---even encourages it. They set the tone for a posture of reverence. They help you realize that something special is going on here.
A couple other advantages of the altar rails are that they allow communion to move more quickly and efficiently. Father is not standing there waiting for the next person to step up. He is able to move up and down the line in a more efficient manner.
I also like the fact that it give me a few seconds kneeling there for extra preparation that I'm about to receive the Eucharist as opposed to just moving in line and then trying to get out of the way. An added plus is that I get to receive communion with my wife, Abby, right next to me.
I've heard arguments that altar rails "separate the people from the sanctuary!" I don't think that is necessarily a bad thing. It should separate that way it is seen as something different than the rest of the church. That way people see it as a sacred, holy place and not just a stage.
Have you had experiences with altar rails? What do you think??