I know you came here looking for some answers but the truth of the matter is no one on this entire site is qualified to tell you what to do with your relationship (including myself)...
Your relationship concerns might be warranted, or they might not...
To me this is the crux. We, obviously only have your original question and a couple of posts, and in all you seem to have a lackadaisical interest in keeping the relationship moving forward. I could easily write a post making the Mr. seem like a lazy drain on the finances, but I could just as quickly give a list of 10 excellent qualities and reasons why I love him, want to spend my life with him and don't ultimately mind spending a few extra dollars on him than I would just by myself.
Can you do the same? Seriously, multiple people have asked, and I don't think they were all being rhetorical: why are you with your girlfriend? What are her good qualities, why do you want to continue to be with her. It's probably not necessary to answer that here, but you should really think about it, could you make a list of 5 awesome things about her?
Your original question of are you being unreasonable has been unanimously answered as 'No,' but it doesn't really solve your issue. I also hope that you find a solution that brings you happiness.