One of the ugliest truths about life is that every choice kills another version of your life.
get married, and you'll eventually miss the freedom you had alone. stay single, and there will be nights when you wonder what it would've been like to build a life with someone. When you have children, and you'll miss parts of the life you had before them. When you don't have children, and you may spend years wondering about the family you never created.
there is no perfect path and there is no decision that leaves you with everything.
the life you didn't choose will always look better from a distance because you never had to pay its price.
stop searching for a choice you won't regret, it doesn't exist. choose your life, accept what it costs, and live with the consequences.