The philosopher asks "Why is there something instead of nothing?"
The apostle answers "...because You have created all things, and because of Your will they exist and were created." Revelation 4:11
So why does everything exist instead of not exist? Because God willed it.
There is a reason God made you. He willed it. If you spent your whole life pursuing the fulfillment of that purpose it would not be a wasted life. You can do it. I believe in you. More importantly, God believes in you. So go for it with all your guts and passion.