The same reason someone labels their items , to show ownership . I used to include poems in my codes before , some Robert Frost . When you’ve spent so much time creating / forging a template or a solution , you want it to be distinctively yours despite the obvious conundrum of being recognisable by username . Brr , My Preciousss
I just think it is to thank god for giving them the chance ? Like thank god for health and strength , normal prayer ?
2. Maybe to have solutions organised by contests .