It is an experience impossible to describe in words. Poets, saints and theologians have tried for 1000 years. It is something like falling in love - it is a mystery of love, and so to give to the Beloved one's whole life is delight, not sacrifice. To consecrate one's whole life in response to Love's call makes perfect sense, even if everyone else sees you the fool. We don't consecrate our life for gifts, but such is the spiritual way.
Grace explodes in the open heart.
For Jesus, words matter. Even today the Spirit of Jesus calls a few to consecrated life. To respond is a grace. Come and see.