So you're saying that beyond trusting Jesus, absolutely nothing matters? That's foolish and selfish as hell if you really believe that.
Since everything on this earth is finite and rusts/fades away, it's the most logical choice. Trusting Jesus and making him Lord of your life entails many other things as well, such as how you choose to treat other people and the personal choices you make. It's the most selfless thing I can do.
"The grass withers, the flower fades, but the word of our God stands forever" - Isaiah 40:8