Well, as someone who is not a religious person but who tries to be a decent, kind, person; I'd say that life is better for people who feel they're caring and kind, rather than for people who have "ugly" attitudes and behaviors toward others. Most things considered "sins" have something to do with disregarding and/or mistreating others.
On those "sins" that are associated with someone doing something that are destructive to himself, better he stop being destructive toward himself at 22 than at 72, when it's too late.
To be honest, I don't believe that some sins are sins people can "be saved from" if there is a God who judges. Sometimes refraining from some "sins" can mean not living a life that is hell on Earth, so that goes back to "the earlier, the better". With those unforgivable, intentional, evil, acts that even God wouldn't forgive (to my thinking), maybe people can't "be saved" anyway - so those people shouldn't bother at 22 OR at 90. All they can do is hope that acts don't come back to them while they're on Earth.