> She also grew up in a richer family than mine. She seems to be used to a higher life quality. I feel some pressure about it. but I have never talked with her about it for the fear for disagreement, whereas I lean toward a Minimalism, less materialized life.

Sounds like a recipe for resentment and disaster. You guys should hash this out and have a discussion before you move forward in your relationship. Differences in lifestyle and finances are the #1 reason for divorce.

Best of luck!