I’m sephardi and I always wondered the same thing. When someone hears that an ashkenaz married a sephardi, many act as though something was wrong with the ashkenaz person who therefore had to marry a sephardi.
But I do think that I have a different mentality than most Ashkenazim. However, I went to regular Ashkenaz school so I do plan on marrying someone who’s half and half cuz a full sephardi will have a different mindset than me even though I have a different mindset than a regular Ashkenaz because of my family background.