The girls that you spend your money and time will eventually go back to normal lives. They will enjoy their campus life, date, get married, and give birth to the children of some other male you have no idea of. In the meantime, you spent all your energy in your 20's stuck in front of your screen thirsting after an ounce of recognition from a 2D girl.
You love them because they call out your name and give you a flash of light in your bleak lives. You feel a sense of belonging with others like you in chat, filling the void in your heart. You love them because through them you vicariously live the life of a popular girl with adoring fans that you can never get, and you want to preserve it forever.
But in the end, you're left with emptiness as you stare at your reflection when the streams end. You're just growing older. You have no girlfriend, no hobby that you can share with real life friends or even your family. You will eventually run out of days when you can keep telling yourself "I'll try harder tomorrow." These vtubers will eventually all graduate - it is not forever. And when it all ends, all you will have is a rope to hang yourself at the end of the stairs you call life.
Anyone who takes a look in your future will see where this all ends. Why do you all continue in this path?