Ex muslim here so sorry if my post doesn't really fit the quota.
However when I was a muslim and still now tbh I never really wanted to marry young.
Around late 20's would have been good, wanted to get my degree(s) out the way and be financially stable before I made any commitment to another human being.
Sin was never a factor, when i was religious i never wanted to get married for the sole reason that I may stray and have a relationship before marriage, I had enough will power to stay single till marriage.