I don't really think Jon enjoys performing anymore, that thing died in 2012. He's just doing it for the bucks now. His smiles and laughs on stage seem forced, back then in the 80s, 90s, 00s, hell, even 2010/2011 were genuine. He had the honest will to perform for the fans. Those RIR and Sao Paulo 2017 gigs were just going all out at the big shows and he was trying to show the critics that the band still lives on even after Richie's sudden departure.
What I'm trying to say is, he doesn't enjoy touring anymore. Even after one of the songs in yesterday's gig he said something like " Oh God, we're hitting the road again in 3 weeks".