This is from a textbook I'm currently studying, and the paragraph in question is about someone's perspective on life etc.
I understand the first part of the paragraph "I don't have to be happy, but I'd like to establish a normal family life". I also understand the meaning of はまっちゃいそう as "to be hooked on something", but I don't understand it in this context. Would someone please be able to explain this to me? Also, are they saying "I don't know if I can get married"?.