I, for one, don't mean it as criticism, but the whole thing perplexes me, and I believe we are free to ask questions here? My point is that Mark is fully aware that he's no longer 40, 50 or even 60, so you'd think he'd take that into consideration before embarking on a costly world tour. Especially since he is such quality-conscious person. However, if there were health issues, of which we know nothing about, that is a different story. And kudos to him for keeping on, despite a somewhat sluggish start, and ending on a high note (no pun intended). These last few shows he has definitely shown that he still got it, which bodes well for the future then. Hopefully, he'll stay healthy and maybe reduce his schedule a little.