Looks like you answered your own question. If she fades away, you will not have a wife to worry about and you can get on the roller coaster and ride to your heart's content.

Do you love her? Does she love you? The beginning of married life is difficult for most people, but if the commitment is there, you can both help each other overcome almost anything. FWIW, one of my closest friends is an airline pilot. His wife never worked in the nearly 30 years they have been married. They somehow "survived" his tough years as an FO, and she is now relishing life as a captain's wife.