"Retire" is too vague a response. Retiring from touring is different to retiring overall.
I've personally seen Guns enough times to not feel I would have missed out if he did call it a day. I'd be "okay" with a retire from touring in lieu of the occasional special gig, studio work, and a more focussed / professional effort when it comes to musical releases at a standard and credibility the band deserves. A live series, rarities vinyl box, spaghetti reissue, remixes. CD boxset etc.