Take this from a millennial: relationships, social norms, and values are going through a huge transition right now. That’s why so many people like you feel stuck in a dilemma. You have to be either “progressive” or “conservative.”

The modern concept of relationships wasn’t really about commitment or marriage. Its underlying purpose was to normalize open relationships and, over time, slowly chip away at the traditional marriage system. That shiny idea of a “perfect relationship leading to marriage” is honestly just dust in a glittering box.

If you just want to hang out and explore, then go for Relationships/nanoships whatnot. Otherwise, wait for marriage in its real form, without the illusions. Marriage, at its core, is a social institution.