Yeah, I wonder. Pick songs that are easier to sing and sound good vocally, or pick songs that are more challenging to sing, but more well loved, and sounds less than good vocally. The two times I've seen Motley Crue live Vince Neil was an absolutely disaster. He started each show decently but he could never go the full 90 minutes. They played all the hits, and everyone in the crowd, at least those around me and those I overheard talking about it had a great time. This past summers tour was with Kiss, and anyone in attendance not affiliated with the Kiss Army seemed to agree that Crue was the far better of the two. Not a single person cared/noticed/mentioned that Vince Neil can't sing. The crowd sang all the songs for them anyways. Would fans, particularly casuals, care if Bon Jovi played more hits but Jon struggled vocally throughout? Jon's voice was pretty well shot on parts of the SWW tour and judging by videos not a single person in attendance seemed to care.