I tend to agree with you....he was never on some path of feeling happy about where he was in life. I don’t think he was stressed out....just that he continually searched for something to anchor himself and to feel attached. He never found it.
There can be various successful people in life who seem to have had lucky breaks...gained status....achieved something that the rest of us would desire. And behind it...dark turmoil because they can’t recognize this for what it is.
Worth noting that although he had a French Catholic father and a Jewish mother, he was raised without any religion. Too bad, in all his travels, he never sought out the One who could have saved him.