How come Niall seems to be the most unscathed from the behemoth that 1D was?

He seems to be so easy going all the time. Barely had any scandals, no reports ever of any substance use, seemed to be happy in the band and after the band, the boys also may have had drama with each other but never any problems with Niall, everyone always talks about him with a lot of admiration even Zayn after he left the band. He doesn't seem like the success went to his head or even gave him any trauma unless he's just the best at hiding it. What do you guys think?