When it comes to the playoffs, there is no western conference. The past 3 years, there have been 4 teams each season competing on a completely different, championship caliber level.
2008: Pistons, Celtics, Lakers, Cavs
2009: Orlando, Cleveland, Lakers, Boston except our injuries ruined us
2010: Cleveland, Orlando, Boston, Lakers
If you'll take a look at that list, you'll see that there are 5 teams. 4 of them are from the eastern conference. The lone championship contender from the west every year? The Los Angeles Lakers.
Yes, the "bottom half" of the western conference is better than the "bottom half" of the Eastern conference. We have some real crap teams in the east like the 76ers, Nets, and Knicks. The western conference only has Minnesota in its pantheon of suck. That's all regular season business.
Besides, if you're someone who does care about the regular season...
All in all, the quality of the conferences even out -- the East's abundance of championship contenders makes up for its collection of poor teams, while the West's dirth of contenders and terrible teams leaves them a homogeneous, mediocre-to-good conference.
When it comes to the playoffs, its a totally different ball game. The teams that matter are the great ones. The contenders. A contender will always win a series over a non-contender. That's why LA beat Phoenix this year. That's why Orlando destroyed Atlanta. There is no team, and there HAS BEEN no team in the west that could challenge the Lakers in a 7 game series these past 3 years. Only contenders beat contenders. Until there is another real, bona fide contender in the West, the Lakers will proceed unmolested to the finals every year until Kobe retires.