There is nothing more self-serving than hedonism. Second, for a Christian to pursue the idea of an eternity of self gratification is unthinkable by very definition. The reason is that the two ideas, by definition, cancel each other out. If a Christian is pursuing hedonism for the greatest pleasure maximized for eternity, then that Christian will never spend eternity in a place where he can gain such pleasure. For the wages of sin is death, but the gift of God is eternal life in Christ Jesus our Lord.
Sin is death.
Self gratification, no matter in what form, is still sin because its aim is not the love of God but the love of self. There are many today who, in God's name, act as though they are worshiping God. Their idea of pleasure is to carouse in broad daylight. They are blots and blemishes, reveling in their pleasures while they feast with you. Many wise, old Christians have chosen to describe the Christian life in these terms.