Face it, I love Adam Levine. It's hard not too whether you are gay or straight. The dude is hot and he gets all the hottest women like Jagger. Funny that.
Also, a few weeks ago Maroon 5 was on SNL and they were great. Adam showed how well he could sing live. It's not every artist nowadays who can sing in a live venue. Levine didn't have any signs that singing and breathing were a problem. Even on the Victoria Secret Show, Maroon 5 were in great vocal shape.
Its great to see an artist breathing and singing and moving around, really entertaining the crowd and still sound not winded or off pitch.
if there is any indication why the band has kept going and kept moving forward, it is the talents of Adam Levine as his voice beautiful and has an ease about it that is not normal for most singers.