So to sum up, my argument may have this form:
1, If positive nihilism is true, in face of everything, one should and will completely honors freewill and seeks things that are meaningful to him/her.
2, Eternity is part of the beliefs of positive nihilism.
3, Positive nihilists should and will seek things that are meaningful to them in eternity.
4, No perspective other than having faith with eternity can bring what a positive nihilist need.
5, Therefore, if one accepts positive nihilism, he/she might as well accept that there is a God. — xinye
I enjoyed the read and this idea is quite thought provoking. Although, I didn't follow the argument you made as well as I wish I could have. After a little bit of thought I feel as though this argument may get the point you're trying to make a little more understandable.
1. If positive nihilism is true and it includes the idea of eternity, then a positive nihilist should be a theist.
2. Positive nihilists seek only what is meaningful to them.
3. Theism gives the kind of optimism and meaning that positive nihilists seek.
4. Therefore, if one is a positive nihilist, they should also be a theist.
You bring in the sense of eternity, and, like you, I think this idea of eternity has a big impact on the argument being made. Theism, most of the time, revolves around what is inherently good and how performing or doing "good" deeds benefits each individual in the sense of eternity. Although "good" is not something a nihilist, in general, would agree with, the benefits that come along with a good deed are something that they
would agree with. When searching for their own meaning and what has meaning to them I'm sure many positive nihilists have stumbled across the benefits of religion and have asked themselves whether it is truly worth it to delve into. As we know, religion brings about many different social benefits, monetary benefits, in specific cases, and the benefits of the afterlife as you mention. All of which spark interest in search of meaning for a positive nihilist.
Before posting, I was reading through once again and I realized this kind of argument falls apart in specific scenarios. If a positive nihilist doesn't find meaning in the search of religion or doesn't find meaning in the benefits of religion, then said positive nihilist would never become a theist. This goes against premise 3 as theism would not be giving a positive nihilist what they seek and the argument falls apart from there. In this case a new argument could be formed perhaps relating the fact that a positive nihilist
does find meaning in the benefits of religion and therefore should be a theist.
If anyone is interested, the video
here explains positive nihilism in an easy to understand way.