I must admit that idea crossed my mind too, but I often have gone solo and only left a return date and expected route in case of emergency.

However I really suspect that it was just the best he was able to manage. There are a few things in the media reports that raise questions in my mind about his life and his mental state.
He was not living what I would call the High Life for one thing.

But again, there is nothing strong enough to make any real judgments from.
If it was a self punched ticket to eternity we will never know and I like to leave speculation over such things alone.