We celebrate because no matter what anyone tells you, this is NOt a step toward the destruction of the 2nd Amendment. If you live in a state that denies CCW entirely, you're way past the question of whether you should have to get a permit. I live in Illinois, where you can't get a CCW permit for any reason, and I can tell you I'd jump at a discretionary system tomorrow if it were offered. I wouldn't like it, but it beats being an unarmed target all the time.
If you live in a state like Michigan, which selectively allows permits only to those the local sherriff likes or approves, then again, you're way past CCW permits on the infringement scale. Think of it as a continuum with absolute CCW freedom (Vermont-style) on one end and absolutely nothing (Illinois-style) on the other. This is a move from the Illinois end toward the Vermont end, so it is positive. It doesn't go all the way to Vermont, but the antis didn't get their laws in one year and we can't roll them back in one year.