Marriage is a real leap of faith. Most people wind up getting hitched eventually, but until you're in a marriage, it's hard to know what it'll be like. Many of us don't even get much of a glimpse from our own parents, so it's worth hearing from other married folks what it's really like.
The r/AskReddit thread, "What's something you wish unmarried people knew?" is a fantastic source of insights into being married.