Iv'e dated this girl for almost two years, still no fights, manipulation, or lies. Granted I don't have as much money as I did when i was single she has never asked any questions about how much I make or anything of the sort. Iv'e been burned several times with woman, much like all of you. Iv'e been been a lurker and have been reading and learning a lot from everyone which is why I come here today. My girlfriend has an average build and keeps herself up, very submissive, and doesnt't have to be told something twice very often. My question is have I found something worth investing in? We've been living together for about 6 months and she does most of the chores around the house,cooking (she's still learning, and cleaning, some interior decor, I'm not crazy about it but It doesn't bother me.) She does not have a job but it hasn't been to hard to make ends meet finacially, and when I have the opprtunity for over time she prefers me to stay home because she is generally a homebody and wants me there with her. Recently Iv'e considered marriage, I have also mentioned that I do not want kids and that I plan on having a vasectomy this summer and she says she would prefer to live without the finacial stress and travel. I told her if we were to ever to marry that she would have to sign a prenup and she agreed to everything, Am I missing something? Any red flags? Or is she simply obessed with me and will just agree to anything? Honest answers would be appreciated.
EDIT: Spelling, Quotations, etc.

I'm fully aware of this subs opinion on marriage which is why I want to know the in and outs, I'd like to know If I'm headed in the wrong direction and want to know what a MGTOW thinks of my situation.

I have decided marriage is out of the question.