Welcome aboard, The first sentence made it sound like you were gonna be really old but you are same age as me! Well done on dragging your wife to shows. I've managed to get mine to 2 under duress
As for the negativity, I don't think it is at the moment, the board is more positive than it has ever been. I don't think a new record has gotten a better reception here for a long time, and rightly so. Bare in mind that this a talking shop and we like discussing the minutae of Bon Jovi and so there may well be criticisms or things we want better- it's only because we know how good they can be when they are on song, like supporting a football team- you can shout and moan and complain but ultimately you want the team to win.
There are lots of fans with different opinions- all with different timescales as the band has endured so long. Personally, I have liked every album. There's always more songs I like than I dislike. The main negativity is Richie's departure- again to be expected, and Jon's voice- which is rightly criticised as it is awful. From first hand experience on Monday night though, it's perfectly fine on every single one of the new songs, ok on Who Says and awful on Bad Medicine. But then, lots of the crowd loved Bad Medicine regardless, and the mix was such that you didn't notice as much at the time. I had concerns before hand how he would sound, but I think they'll get round it, thanks in no small part due to the band sounding fantastic.
Always free free to add your opinions into the mix, this is actually a good time to be a Bon Jovi fan with a cracking album on the way and a tour to follow.