Fasting: is it for today?

The idea of fasting is one that has become fairly uncommon in many of the denominational churches I have attended. No one would step out and say it was no longer necessary, but no one talked about it at all. I have come to the conclusion that it is expected that we fast from time to time. I will give scripture below. I think that fasting may be particular important in our culture here in the US, because we in general have had things so well. It is good to feel the deeper hunger of going a couple days or more without food. To show us the kind of longing and yearning we are supposed to have toward Christ. I think that the act of fasting when done properly can bring you to a place spiritually where you can see things in a different light. If done properly it will likely draw you closer to God. One important aspect is the motivation for your fast, your fast is to be between you and God, it cannot be to please men. Matthew 6:16-18 Moreover when you fast do not be like the hypocrites with a sad countenance. For they disfigure their faces that they may appear to men to be fasting. Assuredly I say to you they have their reward. But you, when you fast annoint your head, and wash your face. So that you do not appear to be fasting, but to your Father who is in the secret place, and your Father who sees in secret will reward you openly.
Matthew 9:15 And Jesus said to them, "can the friends of the bridegroom mourn as long as the bridegroom is with them? But the days will come when the bridegroom will be taken away from them, and then they will fast.
I Corinthians 7:5 Do not deprive one another except with consent for a time, that you may give yourselves to fasting and prayer; and come together again so that Satan does not tempt you because of your lack of self control.
The first verse you will notice says when you fast, it does not say if, it is assumed that you will fast.
The second verse says they will fast, this is future tense, and since there is no clause limiting it to the first century, I conclude that it carries forward to the present.
The third verse, is actually flat out telling husbands and wives to fast. In context Paul is writing about the relationship between husband and wife, and specifically tells them to fast; hmm, perhaps fasting is an important part of modern christianity.