When asked in that light, it becomes quite difficult to argue against by any measure.
You’re the centre of your world. That’s how God, the Creator, Divine Spirit, anything and everything (or nothing) you know him / her / it to be, designed things. You are here, so you may as well be as amazing and beautiful as you can be. Enjoy your time and create the kind of life and existence that you want. Be your part of all that is, in all the ways you wish to be.