First of all, let's be clear. I know, without any trace of a doubt, that life is just life is just life. There is no ultimate purpose or meaning. But none of all that matters. Once you fully realize the nothingness of everything, you're left in a downward spiral of despair. Ain't nobody got time for that. Finding meaning in the meaningless is perfectly fine, as long as you first realize the truth. Downward spirals are themselves completely pointless, even in the less-than-grand scheme of our tiny human lives. What's the point of life, you ask? Why even try?
Well, why not? What is the point of not trying? You only have one life, so why spend it lonely and miserable? We should spend what little time we've been allowed doing the things we enjoy. In order to achieve happiness, one must tuck away that knowledge of meaninglessness and invent some fantastic reason for being. Why not be happy?