did you just go from a Botswanan to a Brazilian? that's even more offensive. when you're a sockpuppet you need to keep in character. *sigh*
meanwhile let's just dance as would @bailarinadesarda
it is obvious nobody gonna win why do people do it
Well first of all, if you're a kid, then it's clever. It's in that sweet spot that humans often find entertaining: not too obvious and not too difficult. This comes up everywhere (art, writing, music... chess itself is an example). Your first impulse is to post because maybe you'll be the last, but then you immediately realize that will never work, and so you immediately realize the OP wasn't being serious when they made it, so it feels clever and fun (if you're a kid).
Second of all, if you want to interact with others, it helps to have some kind of framework. Usually the title sets the framework e.g. "post WW2 economics" or something. But kids need something simple, and spam topics are a safe and easy framework.
Third, in spite of the seemingly absurd framework, the title is just as effective a filter as any serious title. The same way only history or econimic buffs will click on a topic about post WW2 economics, only people of a certain mental age will click on "last comment wins" topics.
So in summary it's intrinsically entertaining, and is effective at gathering like-minded people to participate in an agreed-upon topic.
Don't look at the finger. Look at the moon that it's pointing at.
I would always look at the finger, which tells me where to look. next.
that could be fatal.