It’s called internalizing. Some people do. It isn’t rational, but it’s what I did when I was a teenager. I don’t blame myself now for being psychologically immature then.
Being immature is not some sin any more than a strawberry plant having green strawberries on it is a sin.
But it would take quite an inconsiderate person to jibe at the green strawberries.
And at any rate, family is the proper context for coming to maturity, just like green strawberries belong on the farm until they are red.
And we have become more and more addicted, as a society, to a kind of caricatured rugged individualism which is more like a ragged folly. We turn kids loose among strangers that we scarcely even get to talk to, then wonder where they get all those crazy ideas from.