Don’t hold other people to your standards. It’s their life, not yours. Be happy for them if they’re happy with the decisions they’ve made.
When you judge others based on their decisions, it is often coming from a place of resentment. Whether you resent them for doing something you wish you could do or whether you disagree with their lifestyle, either way, judging them won’t make them change and only presents downside to you. Judging others never brings you joy. Eliminate judging and complaining for a better day.