<human>: Can you give me the gist of the text in a nutshell?

So i'll get straight to the point. We've been together for 6 years and she wants us to get married. Im struggling to find the purpose of marriage. Her reason usually comes down to it just being what she wants. 

We're child free and im not religious at all so starting a family or God dont apply. I know there are some tax/ legal benefits but nothing that seemed worth it imo.

I do want to spend the rest of my life with her and we've been living together for almost 3 years. The idea of betting half of my stuff that we'll definitely last forever seems a bit crazy to me.
<bot>: Been together 6 years, she wants to get married but i dont understand the point of marriage. Can y'all help me understand?