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That is the way God works.
He asks to do some things, like pay tithing, go to church on Sunday for 3 hours, give up some habits that he knows will hurt us, etc. but always compromises us with many more blessings.
One of these sacrifices He asks of us is fasting.
There have been many cases lately where my testimony of fasting has been built.
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That is just one example of how fasting has helped build my faith.
We are told that obedience to God's commandments will always bring blessings. He cannot bless us unless we are obedient (see Doctrine and Covenants 130: 20-21).
It is the same way as with our country's freedom. We will not have it if we do not work for it.
That is what our country was born on. Had the early Americans not fought for freedom from England's oppression, we would not be the people we are today. We may not even have the religion we have today. it was necessary that the Restoration of the Gospel of Jesus Christ in its fullest happen on free soil.
I am so grateful for the sacrifices that have been made by the American soldier. I am so grateful to those early Americans who had the courage to fight for what they knew was right.
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I am very grateful also to the early saints who went through the hardship to bring Jesus Christ's true church back to the earth.
I know that sacrifices bring blessings. They may not be fun, but they are worth it.
Try it out! Don't take my word for it.